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Fundamental research on improvement of smelting efficiency for electric arc furnace:a review 认领 引用
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作者 Hong-Chun Zhu Hong-Bin Lu +7 位作者 Zhou-Hua Jiang Hua-Bing Li Ce Yang Zhong-Hao Wang Shu-Cai Zhang Hao Feng Zhuo-Wen Ni Zhi-Yu He 《Journal of Iron and Steel Research International》 SCIE EI CSCD 2026年第3期193-214,共22页
The electric arc furnace(EAF)offers advantages in energy savings,environmental protection,and high efficiency by using scrap as the primary charge and utilizing a high-temperature electric arc as the main heat source ... The electric arc furnace(EAF)offers advantages in energy savings,environmental protection,and high efficiency by using scrap as the primary charge and utilizing a high-temperature electric arc as the main heat source for steel smelting.The improvement of EAF smelting efficiency is primarily influenced by three key factors:the heat transfer efficiency of the electric arc,the intensity of molten pool stirring,and the melting rate of scrap.The arc heat transfer efficiency determines the energy input efficiency and the maximum smelting temperature of the EAF.Molten pool stirring intensity plays a crucial role in ensuring uniformity in temperature,composition,and flow within the furnace,preventing the formation of dead zones.The scrap melting rate is a decisive factor in EAF smelting efficiency,largely governed by the coupling of heat and mass transfer.Thus,understanding not only the rapid melting mechanism of scrap but also the impact of arc heat transfer and molten pool stirring is essential to optimizing the smelting process.Advancing research in these areas is critical for shortening the EAF smelting cycle,reducing energy consumption,lowering costs,and improving resource utilization.Therefore,recent achievements and development trends in fundamental research on enhancing EAF smelting efficiency were summarized. 展开更多
关键词 Electric arc furnace Smelting efficiency Scrap melting Molten pool stirring Arc heat transfer
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Migration behaviour of heavy metals and vitrification characteristics in melting of municipal solid waste incineration fly ash 认领 引用
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作者 Quanming Li Yajie Gao +7 位作者 Chao Geng Xianfeng Shi Hong Zhang Cheng Chen Yukai Wang Jiaqi Chang Yajie Wang Ziyi Ding 《ENGINEERING Environment》 SCIE EI CAS CSCD 2026年第4期33-47,共15页
Municipal solid waste incineration fly ash(MSWI-FA)is an urgently treatable hazardous waste in China.High-temperature melting is a promising resource utilization technology for global solid waste.This study examines p... Municipal solid waste incineration fly ash(MSWI-FA)is an urgently treatable hazardous waste in China.High-temperature melting is a promising resource utilization technology for global solid waste.This study examines physicochemical properties of grate furnace incineration fly ash from northern and southern China,finding Cd,Pb,and Zn leaching toxicity exceeds national standards by 9.14,8.59,and 1.09 times for northern samples,and 17.58,7.13,and 1.25 times for southern samples,respectively.Clinker ignition loss during melting reaches approximately 40%for both fly ash types.Heavy metal migration(Pb,Zn,Cd,Cr,Cu,Ni)was analyzed across 200–1600℃.Cr and Ni,predominantly in the slag phase,exhibited low volatility(~20%at 1600℃).Fe and Cu showed moderate volatility,exceeding 70%at 1600℃.Pb,Cd,and Zn demonstrated high volatility,surpassing 90%at 1200℃.The volatilization sequence is Cd>Pb>Zn>Cu>Ni>Cr.XRD,SEM,TGA analyses revealed melting behavior and vitrification mechanisms.Heavy metals accumulate in secondary fly ash mainly as chlorides(PbCl2,ZnCl2,ZnCdCl4).Slag minerals transition from low-temperature CaCl2,CaClOH,NaCl,KCl to high-temperature chlorinated(Ca5Al2SiO8Cl4)and non-chlorinated(Ca5Al2SiO10)calcium aluminum silicates.However,no glass peaks were observed in XRD spectra of both fly ashes at 1600℃.Thermodynamic analysis points to high CaO content as the main cause of elevated melting points.To achieve vitrification below 1500℃,the optimal SiO2:CaO:Al2O3 ratio should be approximately(3.5–9.0):(0–4.0):(0–3.5). 展开更多
关键词 Hazardous waste Heavy metals MSWI fly ash Melting Vitrification
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Melting behaviors of scrap steel with varying weight and carbon concentration in a combined blowing converter 认领 引用
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作者 Jia-Hui Wang Qing Fang +4 位作者 Jian-Hao Wang Fei Gao Zhi-Chong Li Hua Zhang Hong-Wei Ni 《Journal of Iron and Steel Research International》 SCIE EI CSCD 2026年第5期33-49,共17页
Current research focuses on analyzing the melting mechanism of scrap in laboratory settings,with limited reports on scrap melting within actual converter blowing environments.A three-dimensional full-scale converter m... Current research focuses on analyzing the melting mechanism of scrap in laboratory settings,with limited reports on scrap melting within actual converter blowing environments.A three-dimensional full-scale converter mathematical model coupling turbulent,multiphase,heat transfer,and mass transfer was established to examine the melting behavior of scrap with varying initial weight and carbon concentration in a combined blowing converter.And,the mathematical model was verified by a water model experiment and a thermal experiment.The results showed that the time required for complete melting of 100 kg scrap was 495 s,exceeding that of 150 and 200 kg scrap by 105 and 30 s,respectively,due to changes in the specific surface area of scrap during the melting process.The melting time for scrap with a carbon concentration of 0.612 wt.%is notably shorter at 465 s compared to 1575 s for 0.326 wt.%carbon concentration and 2475 s for 0.183 wt.%carbon concentration.Additionally,secondary solidification occurs during the melting of low-carbon steel and medium-carbon steel.For scrap with a carbon concentration of 0.612 wt.%,the carburizing time was 134 s,significantly lower than 300 s for 0.326 wt.%carbon concentration and 445 s for 0.183 wt.%carbon concentration,respectively. 展开更多
关键词 Converter Scrap melting Combined blowing Numerical simulation Thermal experiment
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Melting Preparation for Tungsten-Doped Graphene/Copper Composites 认领 引用
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作者 Yunzhong Wu Changsheng Xing +7 位作者 Tong Zhang Jiaxu Shuang Deyu Zhang Jie Li Miao Wang Jie Sheng Lidong Wang Weidong Fei 《Rare Metals》 SCIE EI CAS CSCD 2026年第3期638-654,共17页
Melting production plays a pivotal role in the modern copper industry.However,applying this process to fabricate nanocarbon(e.g.,graphene,carbon nanotubes)-reinforced copper matrix composites has remained a long-stand... Melting production plays a pivotal role in the modern copper industry.However,applying this process to fabricate nanocarbon(e.g.,graphene,carbon nanotubes)-reinforced copper matrix composites has remained a long-standing challenge for nearly 2 decades.In this study,a melting preparation strategy for Graphene-Cu(Gr/Cu)composites was developed by introducing tungsten-doped graphene(W-Gr)into molten Cu,effectively improving the wettability and density compatibility between graphene(Gr)and molten Cu.The contact angle between W-Gr and molten Cu decreases to 80.4°,while the density of W-Gr increases to 9.5 g cm-3.W-Gr sheets containing 13 at%and 18 at%tungsten(designated as 13W-Gr and 18W-Gr)disperse uniformly within the Cu matrix.Thermodynamic analysis indicates that W-Gr can spontaneously disperse in molten Cu when the surface area fraction of WC on W-Gr exceeds 45.8%.The ultimate tensile strength(UTS)of 13W-Gr/Cu reaches 152 MPa in the as-cast state and 449 MPa after cold rolling.The electrical conductivity of 13W-Gr/Cu reaches 100.4%international annealed copper standard(IACS)at 20℃,and is 1.5%higher than that of pure Cu at 180℃.This work overcomes the challenges of fabricating Gr/Cu composites via the melting process,provides a viable approach for their large-scale industrial production. 展开更多
关键词 electrical conductivities graphene/copper composites melting preparation tungsten-doped graphene wettability
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Preparation of phosphorous-rich iron via hydrogen reduction-melting separation of high-phosphorus oolitic hematite 认领 引用
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作者 Yi-Jiang Zhao Guang-Qiang Li +3 位作者 Jun-Bo Li Jiang-Hua Ma Wen Yan Yu Liu 《Journal of Iron and Steel Research International》 SCIE EI CSCD 2026年第7期366-379,共14页
Distinct from conventional dephosphorization approaches,a novel low-carbon and efficient strategy was proposed for producing phosphorus-rich iron via hydrogen reduction-melting separation of high-phosphorus oolitic he... Distinct from conventional dephosphorization approaches,a novel low-carbon and efficient strategy was proposed for producing phosphorus-rich iron via hydrogen reduction-melting separation of high-phosphorus oolitic hematite.The process requires neither additional fluxes nor complex pretreatment of the ore.Adjustment of the pellet FeO content via control of the reduction degree enables modulation of the physicochemical characteristics of the autogenous slag,thereby promoting efficient phosphorus-rich iron production under optimized slag-metal separation conditions.Experimental results indicate that roasting at 1200℃promotes the grain growth of hematite and significantly enhances the strength of the pellets.The hydrogen reduction process of high-phosphorus oolitic hematite at 900-1000℃follows the unreacted core model,with the reduction rate controlled by interfacial chemical reactions.During the hydrogen reduction process at 1000℃,apatite was not reduced.As the metallic iron particles aggregated and grew,apatite and gangue phases formed complex slag phases.Appropriate adjustment of the pellet reduction degree enables control of the phosphorus content in the phosphorus-rich iron obtained during the melting process.This regulation is related to the oxygen potential of the slag and the kinetic conditions.By controlling the reduction degree of the pellets within the range of 75%-90%,the phosphorus content in the resulting metal products was effectively adjusted from 0.64 to 1.53 wt.%.At a pellet reduction degree of 90%,the recoveries of both iron and phosphorus after melting exceeded 80%.This result confirms a green and efficient method for recovering iron and phosphorus from oolitic hematite without using flux. 展开更多
关键词 Oolitic hematite Phosphorus-rich iron Hydrogen reduction Reduction degree Melting separation
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Impactful amelioration on the thermodynamics and kinetics of the RE-Mg-Ni-based alloys by melt spinning-crystallization annealing 认领 引用
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作者 Xin Zhang Zhenyu Hou +5 位作者 Peng Sheng Jun Li Dongliang Zhao Shihai Guo Lihong Xu Yanghuan Zhang 《Journal of Magnesium and Alloys》 SCIE EI CAS CSCD 2026年第5期346-366,共21页
The incorporation of transition metal Ni and rare-earth elements La and Y into Mg-based alloys significantly enhances hydrogen storage performance through synergistic effects.To optimize storage capacity and glass-for... The incorporation of transition metal Ni and rare-earth elements La and Y into Mg-based alloys significantly enhances hydrogen storage performance through synergistic effects.To optimize storage capacity and glass-forming ability(GFA),a Mg90La2Y2Ni6 alloy was designed and synthesized via induction casting and melt spinning.The amorphous alloy was further subjected to crystallization annealing at 400℃ to obtain a crystallized alloy.Structural analyses(XRD,SEM,HRTEM)revealed that the cast alloy comprised Mg,Mg2Ni,La2Mg17,and YNi3 phases.Melt spinning produced amorphous-nanocrystalline composites,with the amorphous fraction increasing with spinning rate.The crystallized alloy exhibited a phase composition similar to the cast alloy,but with finer,uniformly dispersed precipitates that provided enhanced diffusion pathways.Hydrogen storage properties were evaluated by Sievert apparatus and DSC.The crystallized alloy demonstrated markedly improved hydrogen absorption/desorption kinetics compared with the cast alloy.Specifically,the desorption activation energy decreased from 67.84 kJ/mol(cast)to 58.56 kJ/mol(crystallized,30 m/s spinning rate).In addition,the initial hydrogen desorption temperature was reduced from 323.5℃ to 288.2℃.Thermodynamic analysis further confirmed a decrease in desorption enthalpy,indicating reduced hydride stability.Overall,the melt spinning-crystallization annealing route effectively tailors the microstructure and thermodynamics of Mg-based alloys,leading to lower activation energy,reduced desorption temperature,and enhanced hydrogen storage performance. 展开更多
关键词 RE-Mg-Ni-based alloy Melt spinning Crystallization annealing Grain refinement Hydrogen storage kinetics Thermodynamic property
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Distinctive mechanical responses of strut-based and triply periodic minimal surface(TPMS)Ti-6Al-4V diamond lattice structures produced by electron beam melting 认领 引用
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作者 Li-Na Zhang Yu Guo +5 位作者 Wu Pan Wen-Ge Xu Cheng-Long Teng Rui-Feng Li Sheng Lu Liang-Yu Chen 《Metals Advances》 SCIE EI CAS CSCD 2026年第3期45-54,共10页
Lattice structures exhibit exceptional specific strength and energy absorption,making them ideal for aerospace and biomedical applications.While both strut-based(Strut-D)and TPMS-based(triply periodic minimal surface-... Lattice structures exhibit exceptional specific strength and energy absorption,making them ideal for aerospace and biomedical applications.While both strut-based(Strut-D)and TPMS-based(triply periodic minimal surface-D)diamond lattice structures show promising mechanical performance,the fundamental differences in their deformation mechanisms and mechanical behavior remain unclear.In this work,Ti-6Al-4V Strut-D and TPMS-D structures with 20%volume fraction were fabricated via electron beam melting(EB-PBF)and their compressive behavior and microstructure were systematically investigated.Compared to Strut-D,TPMS-D structures demonstrate superior mechanical properties:elastic modulus increased by 18.0%(1.51 GPa vs 1.28 GPa),compressive strength enhanced by 28.9%(58.4 MPa vs 45.3 MPa),and energy absorption at densification improved by 57.8%(16.1 MJ m-3vs 10.2 MJ m-3).Finite element analysis revealed that the continuous curved surfaces of TPMS-D disperse stress more uniformly,avoiding stress concentration at nodes and enabling more material to bear load.In contrast,Strut-D exhibits localized stress at strut-node junctions,leading to premature failure.This study clarifies the topological influence on mechanical responses and provides insights for designing high-performance lattice structures. 展开更多
关键词 Lattice structure Ti-6Al-4V Electron beam melting Diamond Compressive behavior
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Corrosion behaviors in ZX-series Mg alloys:The interplay of Mn solute,grain structure,and phase evolution after laser surface melting 认领 引用
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作者 Chee Ying Tan Cuie Wen +4 位作者 Edwin Mayes Ran He Xiaobo Chen Dechuang Zhang Hua Qian Ang 《Journal of Magnesium and Alloys》 SCIE EI CAS CSCD 2026年第5期273-288,共16页
This study investigates the microstructural and functional evolution of hot-extruded ZX21 and ZXM211 magnesium alloys subjected to laser surface melting(LSM).The effects of grain size,crystallographic texture,solute e... This study investigates the microstructural and functional evolution of hot-extruded ZX21 and ZXM211 magnesium alloys subjected to laser surface melting(LSM).The effects of grain size,crystallographic texture,solute enrichment,and secondary phase characteristics on corrosion resistance and microhardness are systematically examined.LSM homogenizes the microstructure,weakens basal texture,and enables a uniform distribution of secondary phases,shifts corrosion toward less localized corrosion attack.Mn’s high melting point and low diffusivity favored solute retention inα-Mg during LSM,limiting second phase precipitations and promoting grain coarsening.Although potentiodynamic polarization indicated a higher average corrosion rate for LSM-treated ZXM211,the corrosion mode was more uniform,consistent with a lower second-phase fraction and a topology in which Ca2Mg6Zn3 embedded within Mg2Ca limits effective cathode exposure and mitigates microgalvanic intensification.Despite these favorable microstructural changes,secondary precipitation strengthening remains negligible,and no significant improvement in hardness is observed post-LSM,though both as-extruded and LSM-treated states retained high microhardness. 展开更多
关键词 Laser surface melting(LSM) Mg-Zn-Ca-Mn alloys Microstructure Corrosion resistance Microhardness
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Glacial melting impact on runoff and evapotranspiration based on glacier-coupled SWAT model:A case study in the upper Shiyang River Basin,China 认领 引用
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作者 CHU Jiangdong SU Xiaoling +6 位作者 WANG Lei WU Nan Komelle ASKARI WU Haijiang ZHANG Te XU Liujia ZHANG Qifei 《Journal of Arid Land》 SCIE CAS CSCD 2026年第2期216-234,共19页
Glacial meltwater constitutes a vital component of the water supply in arid and semi-arid areas.However,the influence of glacial melting on runoff and evapotranspiration under global warming remains insufficiently und... Glacial meltwater constitutes a vital component of the water supply in arid and semi-arid areas.However,the influence of glacial melting on runoff and evapotranspiration under global warming remains insufficiently understood.Previous studies coupling the Soil and Water Assessment Tool(SWAT)model with glacier modules often failed to consider the spatial heterogeneity of temperature during glacial melting,potentially leading to biased estimates of meltwater volume.In this study,we developed a glacier-coupled SWAT(SWAT-glacier)model considering the digital elevation model(DEM)based temperature-driven glacial melt processes to elucidate the impact of glacial melting on hydrological processes across four river basins(Dongda,Xiying,Jinta,and Zamu)of the upper Shiyang River Basin(SYRB)in northwestern China from 1986 to 2021.Compared with the standard SWAT model,the proposed SWAT-glacier model significantly improved the simulation accuracy for both runoff and evapotranspiration.Specifically,in comparison with the standard SWAT model,the Nash-Sutcliffe efficiency of the SWAT-glacier model showed a relative improvement of approximately 0.42%–9.16%and 1.50%–10.15%for runoff and evapotranspiration,respectively,in the four river basins during the validation period.Annual glacial runoff occurred predominantly from May to October,whereas glacial melt-induced evapotranspiration peaked between June and August.From 1986 to 2021,the average contributions of glacial melt to runoff were 6.97%for Dongda,3.06%for Xiying,2.70%for Jinta,and 0.67%for Zamu,whereas its contributions to evapotranspiration were 9.06%,5.14%,3.21%,and 1.59%,respectively.This study presents a SWAT-glacier modeling framework that enhances the simulation of hydrological processes in cold regions.The proposed methodology can be extended to other glacierized basins to provide valuable insights into water resource management under climate change. 展开更多
关键词 glacial melting Soil and Water Assessment Tool(SWAT) SWAT-glacier model degree-day factor climate change Shiyang River Basin
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中国东南部无成分间断的火山−侵入杂岩的晶体−熔体分异:来自Rhyolite-MELTs热力学模拟的制约 认领 引用
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作者 赵思狄 夏炎 李琳 《沉积与特提斯地质》 CAS CSCD 北大核心 2026年第1期188-202,共15页
晶粥模型为深入揭示火山岩与侵入岩之间的成因联系提供了新的视角。根据这一模型,高硅的熔体通过晶体–熔体分离成火山岩或高硅花岗岩,而残余堆晶则冷却结晶形成相对低硅的花岗岩类,两者之间往往存在明显的成分间断。但越来越多的研究发... 晶粥模型为深入揭示火山岩与侵入岩之间的成因联系提供了新的视角。根据这一模型,高硅的熔体通过晶体–熔体分离成火山岩或高硅花岗岩,而残余堆晶则冷却结晶形成相对低硅的花岗岩类,两者之间往往存在明显的成分间断。但越来越多的研究发现,许多火山–侵入杂岩、岩性复杂的花岗质复合侵入杂岩及结构和成分均一的富晶体火山岩并无明显的成分间断,它们同样也是通过晶体–熔体分异形成的,这使得如何揭示这类杂岩体中不同岩石单元之间的隐性成因联系,成为研究者亟须解决的难题。近年来,Rhyolite-MELTs软件被广泛应用于定量模拟岩浆系统分异演化的过程,取得了良好效果。我们利用Rhyolite-MELTs软件,对东南沿海晚中生代几个代表性的中酸性火山–侵入杂岩和花岗质复合侵入杂岩进行了定量约束。模拟结果显示,以江西相山为代表的不具有明显成分间断的火山–侵入杂岩,堆晶相和抽取熔体相在晶体–熔体分异过程中最终成分趋于相近;而以大莱为代表的具有明显成分间断的火山–侵入杂岩,在结晶分异过程中,晶体和熔体之间始终存在一定的成分差异。进一步分析发现,中酸性岩浆的晶体–熔体分异过程受到初始熔体成分、压力、矿物结晶顺序等多种条件共同影响。结构和成分均一的富晶体火山岩可能是由晶体–熔体分异后,熔体相和堆晶相成分相近的岩浆储库,经历岩浆补给和晶粥再活化最终均一化而形成的。 展开更多
关键词 晶体–熔体分异 Rhyolite-MELTs 富晶体火山岩 火山–侵入杂岩 东南沿海
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Microstructure and properties of selective laser melted AlxCoCrFeNi high entropy alloy via molecular dynamics simulation 认领 引用 被引量：2
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作者 Jiajun Liu Jing Peng +2 位作者 Weipeng Li Hui Feng Shenyou Peng 《Acta Mechanica Sinica》 SCIE EI CAS CSCD 2026年第1期122-132,共11页
Selective laser melting(SLM),as an additive manufacturing technology,has garnered widespread attention for its capability to fabricate components with complex geometries and to tailor the microstructure and mechanical... Selective laser melting(SLM),as an additive manufacturing technology,has garnered widespread attention for its capability to fabricate components with complex geometries and to tailor the microstructure and mechanical properties under specific conditions.However,the intrinsic influence mechanism of microstructure formation under non-equilibrium solidification conditions in SLM processes has not been clearly revealed.In the present work,the influence of Al concentration and process parameters on the microstructure forming mechanism of AlxCoCrFeNi HEAs prepared by SLM is investigated by molecular dynamics simulation method.The simulation results show that the difference in Al content significantly affects the microstructure formation of HEAs,including the growth rate and morphology of columnar crystals,stress distribution at grain boundaries,and defect structure.In addition,the results show that increasing the substrate temperature improves the solidification formability,reduces microstructural defects,and helps reduce residual stress in AlxCoCrFeNi HEAs.By analyzing the influence of heat and solute flow in the molten pool on the growth of columnar crystals,it is found that spatial fluctuations in Al concentration during the non-equilibrium solidification process inhibit the high cooling rates induced by steep temperature gradients.These findings promote the understanding of the forming mechanism of microstructure in HEAs prepared by SLM and provide theoretical guidance for designing high-performance SLM-fabricated HEAs. 展开更多
关键词 Selective laser melting High entropy alloys Microstructure formation Substrate temperature Thermal deformation
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Synthesis of novel isosorbide-based polycarbonates by melt chain extension method 认领 引用 被引量：1
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作者 Xiafeng Yang Wushan Sun +3 位作者 Chen Li Wei Bai Qingyin Wang Gongying Wang 《Chinese Chemical Letters》 SCIE CAS CSCD 2026年第4期274-278,共5页
The melt-transesterification polycondensation method necessitates elevated reaction temperatures and protracted reaction times in the copolymerization of modified isosorbide-based polycarbonates.This results in a decl... The melt-transesterification polycondensation method necessitates elevated reaction temperatures and protracted reaction times in the copolymerization of modified isosorbide-based polycarbonates.This results in a decline in molecular weight and color degradation of the copolymerized IS-PC.In this paper,the process of polyethylene glycol(PEG)modification was introduced in the synthesis of isosorbide-based copolycarbonate(PEXHDCYC)by means of a melt chain extension method.As demonstrated by experimental findings,this method has the capacity to reduce the reaction temperature and shorten the reaction time.Additionally,it has been observed to enhance the molecular weight and overall properties of the material.Through the optimization of reaction conditions,a series of PEXHDCYC with weight average molecular weight(Mw)ranging from 19,004 g/mol to 73,294 g/mol were synthesized.The results demonstrated that the glass transition temperature(Tg)of PEXHDCYC decreased in conjunction with an increase in the PEG1000content.It is noteworthy that the PEXHDCYC synthesized by this method exhibits an exceptional elongation at break,reaching up to 135.45%±24%.Furthermore,PEXHDCYC demonstrates superior optical properties in comparison to bisphenol A polycarbonate(BPA-PC). 展开更多
关键词 Isosorbide-based polycarbonate Melt chain extension method Mechanical properties Optical properties
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Multi-scale cross-modal interaction network with visual–acoustic–thermal signal fusion for process monitoring of selective laser melting ceramic printing 认领 引用 被引量：1
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作者 Han Xu Ruichan Lv 《Additive Manufacturing Frontiers》 CAS CSCD 2026年第2期78-92,共15页
Recently,selective laser melting(SLM)has attracted considerable interest as an additive manufacturing process for ceramic materials in the advanced manufacturing field.However,frequent failures during SLM printing pos... Recently,selective laser melting(SLM)has attracted considerable interest as an additive manufacturing process for ceramic materials in the advanced manufacturing field.However,frequent failures during SLM printing pose significant challenges to the quality and performance of the final products.Therefore,a multi-scale cross-modal interaction network(MSCMIN)is proposed for monitoring the SLM ceramic printing process.The MSCMIN achieves accurate monitoring of the printing process by learning multi-modal signals from multi-scale vision,infrared thermal imaging,and acoustic emissions.To better explore the features of the visual and thermal signals,we designed a multi-scale spatial enhancement module(MSSEM)to enhance the spatial information of the signals at different scales.A multi-time domain fusion module(MTDFM)was designed to capture the transient variations and impulse characteristics of the acoustic signals to better analyze the time-frequency characteristics of the acoustic emission signals.A cross-modal interaction module is used to learn the extracted feature vectors for multi-level interactions.This module achieves feature fusion and multilevel feature complementarity among the three modalities.The utility of the MSCMIN was validated by collecting a multi-modal dataset from the SLM ceramic printing process.Experiments demonstrated the superiority of the MSCMIN over existing single-modal and multi-modal methods in multi-modal feature extraction and fusion.Finally,the validity of the design module and complementary nature of multi-modal data fusion were verified through multiple sets of ablation experiments to improve the interpretability of the model.The final software was tested and implemented in a company. 展开更多
关键词 Selective laser melting(SLM) Ceramic printing Multi-modal monitoring Deep learning
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Solid–liquid equilibrium and yield correlation model of melt crystallization of dimethylphenol isomer mixtures 认领 引用
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作者 Yuxi Zhang Li Yang +4 位作者 Yixin Ma Yan Zhang Junya Cao Jingcai Cheng Chao Yang 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2026年第1期112-122,共11页
Dimethylphenols serve as important intermediates in synthesizing pharmaceuticals and agrochemicals,yet traditional distillation struggles to separate their isomers due to minimal boiling point differences,and the deve... Dimethylphenols serve as important intermediates in synthesizing pharmaceuticals and agrochemicals,yet traditional distillation struggles to separate their isomers due to minimal boiling point differences,and the development of melt crystallization is hampered by lacking solid–liquid equilibrium (SLE) data for some isomers.Therefore,the SLE data of both binary and ternary mixtures of 2,3-dimethylphenol (2,3-DMP),3,5-dimethylphenol (3,5-DMP),and 3,4-dimethylphenol (3,4-DMP) were determined by using differential scanning calorimetry in this work.Additionally,crystallographic analysis was conducted to investigate the thermodynamic characteristics of these mixtures.The experimental results indicated that all the systems investigated in this research exhibited eutectic behavior.The experimentally obtained SLE data were well correlated with the Wilson and non-random two-liquid models.The excess thermodynamic functions were calculated to analyze the types and intensities of the molecular interactions occurring in the mixtures.Furthermore,this study developed a model for the correlation between the theoretical crystallization yield and the actual cooling yield and final yield in melt crystallization.This study has furnished reliable data essential for developing and optimizing the melt crystallization process of mixtures of 2,3-DMP,3,5-DMP,and 3,4-DMP. 展开更多
关键词 Melt crystallization Yield Dimethylphenols Solid–liquid equilibrium Thermodynamics models
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Fabrication of composite microspheres doped with nano-aluminum powder using melt spray technology 认领 引用
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作者 Yilin Liu Lanqi Zhang +7 位作者 Yulong Yin Nan Li Xiangnan Chu Qi Ma Jing Liu Wenbo Yang Yingdi Lv Shengyang Tao 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2026年第2期283-292,共10页
Melt spray technology serves as an effective method for fabricating spherical micro-nano composite materials,with established applications in catalysts and pharmaceuticals.This study extends its application to energet... Melt spray technology serves as an effective method for fabricating spherical micro-nano composite materials,with established applications in catalysts and pharmaceuticals.This study extends its application to energetic composite microspheres,investigating the microsphere formation process using nano-aluminum powder(nano-Al)combined with the inert surrogate sucrose octaacetate(SOA).This study systematically investigates the effects of process parameters,formulation composition,and storage conditions on the particle size,morphology,and stability of SOA/Al composite microspheres.Higher atomizing gas pressure and temperature significantly reduced median particle diameter(D50),yielding a D50 of 35.09μm at 150℃ and 200 kPa.The addition of polyethylene glycol:polyvinylpyrrolidone(1:1)enhanced microsphere circularity from 0.67 to 0.85.This system produced 78 g composite microspheres within 20 min,demonstrating efficientlab-scale production.X-ray diffraction and differential scanning calorimetry results indicated that rapid cooling led to amorphous structures,which were stabilized during storage at 4℃.The scalable melt spray fabrication strategy developed here for nanoparticle-doped composite microspheres provides a basis for future studies involving diverse functional composites. 展开更多
关键词 Melt spray Micro-nano composite material Amorphous structure Composite microspheres
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A novel Al-Mg-Mn-Zr-Ti alloy with an excellent strength-ductility combination prepared via selective laser melting 认领 引用
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作者 Qing Zhao Chun-Lu Zhao +5 位作者 Yu-Hang Wu Ying Han Zhen-Min Li Jia-Peng Sun Wei-Wei Zhu Xu Ran 《Journal of Iron and Steel Research International》 SCIE EI CSCD 2026年第1期239-247,共9页
Selective laser melting(SLM)is an advanced additive manufacturing technique that enables the fabrication of complex metal components with high density,precision,and design flexibility.A novel Sc-free Al-4.58Mg-1.17Mn-... Selective laser melting(SLM)is an advanced additive manufacturing technique that enables the fabrication of complex metal components with high density,precision,and design flexibility.A novel Sc-free Al-4.58Mg-1.17Mn-1.59Zr-1.45Ti alloy was successfully fabricated via SLM,achieving a relative density of~99.89%.The microstructure of the as-fabricated alloy was characterized by scanning electron microscopy and transmission electron microscopy,which revealed refined equiaxed grains,a high density of low-angle grain boundaries and dislocation structures,as well as Mg segregation along grain boundaries.Additionally,a variety of dispersed precipitates were identified,including Mg-containing oxides,L12-Al3(Tix,Zr1−x),and Al3Zr particles.Room-temperature tensile tests showed that the alloy exhibits an excellent combination of strength and ductility,with a yield strength of 453.2±12 MPa,an ultimate tensile strength of 515.1±8 MPa,and an elongation of 22.5%±0.3%.The high strength was attributed to the combined effects of grain boundary strengthening,solid solution strengthening,precipitation strengthening,and dislocation strengthening.The developed Sc-free Al-Mg-Mn-Zr-Ti alloy demonstrates significant potential as an economical high-strength lightweight material for SLM-based manufacturing applications. 展开更多
关键词 Selective laser melting Aluminum alloy Equiaxed grain microstructure Precipitation Mechanical property
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Corrosion wear behavior of selective laser melting TC4 alloy in 3.5 wt.%NaCl solution 认领 引用
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作者 Shao-yu Feng Lan-lan Yang +3 位作者 Jie Li Jin-long Wang Yan-bing Tang Fu-hui Wang 《Journal of Iron and Steel Research International》 SCIE EI CSCD 2026年第3期251-265,共15页
The corrosion wear behavior of the selective laser melting(SLM)and forged TC4 alloys in 3.5 wt.%NaCl solution is studied.Results indicate that the current densities of the two TC4 alloys increase with the increase in ... The corrosion wear behavior of the selective laser melting(SLM)and forged TC4 alloys in 3.5 wt.%NaCl solution is studied.Results indicate that the current densities of the two TC4 alloys increase with the increase in applied potential,meaning that the corrosion resistance of the alloys decreases.And the main product of the passive film is TiO2.What’s more,corrosion wear behavior is more severe due to the presence of corrosion,resulting in greater mass losses and deeper wear scars.To explore the interaction between corrosion and wear for the two TC4 alloys,the change of the mass loss proportions for wear caused by corrosion and corrosion caused by wear with potential is analyzed.The mass loss of wear caused by corrosion cannot be ignored,and it affects SLM TC4 alloy with the unique acicularα′-phase significantly. 展开更多
关键词 Selective laser melting Titanium alloy Electrochemical corrosion Wear behavior Mass loss
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Numerical simulation of airflow boundary layer effects on behavior of melt puddle and surface quality of Fe–3.0 wt.%Si non-oriented silicon steel ribbons in planar flow casting 认领 引用
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作者 Jia-Qi Chang Si-Qian Bao +4 位作者 Xiao-Wei Gong Qing-Ming Chang Chen Liu Yuan-Yao Cheng Jia-Rui Hu 《Journal of Iron and Steel Research International》 SCIE EI CSCD 2026年第2期116-130,共15页
Silicon steel is characterized by a high melting point,poor fluidity,and limited wettability,and the process window for the preparation of non-oriented silicon steel ribbons by planar flow casting(PFC)is limited.Durin... Silicon steel is characterized by a high melting point,poor fluidity,and limited wettability,and the process window for the preparation of non-oriented silicon steel ribbons by planar flow casting(PFC)is limited.During the production process,the melt puddle(MP)behavior is a key factor in determining the final quality of ribbons,and the influence mechanism of the airflow boundary layer on the MP behavior and the surface quality of ribbons is still unclear.The effects of wheel speed on the quality of PFC Fe–3.0%Si non-oriented silicon steel ultra-thin ribbons were systematically investigated.Combined with experiments and numerical simulations,the mechanism of different wheel speeds on the behavior of MP and the surface quality of ribbons was analyzed in depth.It is found that when the MP reaches a steady state,the upstream meniscus shows a C-shape,while the downstream meniscus exhibits a sloped shape.During the formation of the MP,the vortex phenomena occur both around and within the MP.With the increase in wheel speed,the thickness of the ribbons gradually decreases from 67 to 31μm.Furthermore,the air vortex on the upstream and downstream meniscus becomes more and more intense,which significantly increases the possibility of air entrapment in the MP and leads to a significant increase in the percentage of air pockets.When the wheel speed is 10–15 m/s,the surface of the ribbon is smooth,the thickness uniformity is better,and there are fewer defects.However,when the wheel speed is more than 15 m/s,the MP’s stability deteriorates,and the ribbons have obvious veining,wrinkles,and uneven thickness. 展开更多
关键词 Non-oriented silicon steel ribbon Planar flow casting Vortex Melt puddle Upstream meniscus Downstream meniscus
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Mechanical Anisotropy of Ti-6Al-4V Alloy Fabricated by Selective Laser Melting 认领 引用
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作者 Liu Junwei Liu Zhenya +3 位作者 Fan Caihe Ou Ling He Wuqiang Ma Wudan 《稀有金属材料与工程》 SCIE EI CAS CSCD 北大核心 2026年第1期35-46,共12页
To explore the formation mechanism of anisotropy in Ti-6Al-4V alloy fabricated by selective laser melting(SLM),the compressive mechanical properties,microhardness,microstructure,and crystallographic orientation of the... To explore the formation mechanism of anisotropy in Ti-6Al-4V alloy fabricated by selective laser melting(SLM),the compressive mechanical properties,microhardness,microstructure,and crystallographic orientation of the alloy across different planes were investigated.The anisotropy of SLM-fabricated Ti-6Al-4V alloys was analyzed,and the electron backscatter diffraction technique was used to investigate the influence of different grain types and orientations on the stress-strain distribution at various scales.Results reveal that in room-temperature compression tests at a strain rate of 10-3 s-1,both the compressive yield strength and microhardness vary along the deposition direction,indicating a certain degree of mechanical property anisotropy.The alloy exhibits a columnar microstructure;along the deposition direction,the grains appear equiaxed,and they have internal hexagonal close-packed(hcp)α/α'martensitic structure.α'phase has a preferential orientation approximately along thedirection.Anisotropy arises from the high aspect ratio of columnar grains,along with the weak texture of the microstructure and low symmetry of the hcp crystal structure. 展开更多
关键词 selective laser melting Ti-6Al-4V anisotropy crystal orientation
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Single-roll melt spinning of magnesium/aluminum clad ribbon for battery applications:Experiments and modeling 认领 引用
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作者 Yuichi Kirimoto Itsuki Hara +6 位作者 Tadayoshi Tsukeda Tetsuo Aida Hironobu Tabata Toshio Haga Jianyue Zhang Chia-Yu Chang Alan A.Luo 《Journal of Magnesium and Alloys》 SCIE EI CAS CSCD 2026年第4期542-552,共11页
In recent years,there has been growing interest in developing high-performance,multifunctional ribbons for battery applications.In this study,we produced ultra-thin bimetallic ribbons(200-350μm thick)of pure Al and p... In recent years,there has been growing interest in developing high-performance,multifunctional ribbons for battery applications.In this study,we produced ultra-thin bimetallic ribbons(200-350μm thick)of pure Al and pure Mg using single-roll melt spinning to form a layered Mg/Al structure.Key process parameters,including nozzle design and roll peripheral speed,were investigated via experiments and computational fluid dynamics(CFD)simulations.CFD analysis showed that a gradient-shaped nozzle reduced melt turbulence during co-flow of Mg and Al melt streams,improving Mg/Al interface formation.A diffusion layer formed at the Mg/Al interface,composed of Mg17Al12 and Mg2Al3 intermetallics as identified by electron probe micro-analysis(EPMA),is critical to the interfacial bonding in bimetallic ribbons.The thickness of this layer decreased with increasing roll speed,from 30.1μm at 10 m/s to 4.5μm at 20 m/s.These results were consistent with predictions from CFD analysis and DICTRA(DIffusion Controlled TRAnsformations)modeling,confirming that faster cooling rates at higher speeds limited diffusion layer growth.This work has established the feasibility of cladding dissimilar metals(Al and Mg)using a single-roll melt spinning process for battery applications. 展开更多
关键词 Mg/Al ribbon Single-roll melt spinning Rapid solidification Computational fluid dynamics Diffusion modeling
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