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Hybrid algorithm of quantum gate/annealing and classical computer for truss topology optimization 认领 引用 被引量：1
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作者 Zhenghuan Wang Xiaojun Wang 《Acta Mechanica Sinica》 SCIE EI CAS CSCD 2026年第6期76-93,共18页
This paper presents a novel approach for truss topology optimization using a hybrid architecture that integrates gate-based quantum computers,quantum annealers,and classical computing platforms.By leveraging the paral... This paper presents a novel approach for truss topology optimization using a hybrid architecture that integrates gate-based quantum computers,quantum annealers,and classical computing platforms.By leveraging the parallelism and quantum superposition inherent in quantum computers,the proposed method significantly enhances optimization performance,yielding faster results and improved mechanical properties compared to classical methods.Additionally,quantum tunneling mechanisms are employed to efficiently conduct static analysis.The effectiveness of the proposed method is validated through three numerical examples,demonstrating its ability to handle truss topology optimization problems.This hybrid system offers a promising solution for intricate truss optimization tasks,highlighting the potential of quantum computing to advance engineering design and solve real-world challenges more efficiently. 展开更多
关键词 Quantum computing Quantum annealing Topology optimization Quantum information
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Composite-Field Annealing Enables Superior High-Temperature Noise Stability in Fluxgate Sensors With Co-Rich Amorphous Microwires 认领 引用
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作者 Lining Pan Zhen Cui +8 位作者 Lizi Pan Xingjie Jia Mengran Su Chunyang Mu Aina He Yaqiang Dong Qikui Man Baogen Shen Jiawei Li 《Rare Metals》 SCIE EI CAS CSCD 2026年第2期707-717,共11页
Fluxgate sensors with Co-rich amorphous microwires,widely used for their low noise in magnetic field measurements,encounter significant challenges in high-temperature environments such as well drilling and geological ... Fluxgate sensors with Co-rich amorphous microwires,widely used for their low noise in magnetic field measurements,encounter significant challenges in high-temperature environments such as well drilling and geological exploration.Prolonged thermal aging degrades the performance of Co-rich amorphous microwires,resulting in increased noise levels.To address these issues,this study innovatively proposed a composite-field annealing(CFA)—a sequential treatment involving tensile stress annealing,followed by longitudinal and transverse magnetic field annealing processes—to enhance the thermal aging stability of Co-rich amorphous microwires.A sensor incorporating CFA-aged microwires achieved a significantly lower noise level of 18 pT Hz-1/2at 1 Hz,compared to 130 pT Hz-1/2 in normally annealed(NA)counterparts.CFA microwires exhibited superior long-term stability in permeability,with a lower rate of 34.2%of permeability variation over time at 175℃for 150 h.The enhanced stability was attributed to the stabilization of magnetic anisotropy for CFA microwires,as confirmed by higher activation energy calculated by local magnetic anisotropy energy during aging and a negligible domain wall movement rate under in situ high-temperature Lorentz transmission electron microscopy(L-TEM)experiments.This work introduces CFA as a critical technique for optimizing Co-rich amorphous microwires,enabling the development of high-stability and low-noise fluxgate sensors for harsh environmental applications. 展开更多
关键词 aging stability composite-field annealing co-rich amorphous microwire fluxgate sensor noise
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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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Effects of Different Nucleating Agents,Annealing and Pre-stretching Process on the Crystallinity and Mechanical Properties of Poly(butylene carbonate) 认领 引用
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作者 Rong Wu Qin-Yao Jiang +4 位作者 Sheng Zou Wei Bai Qing-Yin Wang Gong-Ying Wang Shao-Ying Liu 《Chinese Journal of Polymer Science》 SCIE EI CAS CSCD 2026年第8期2704-2713,I0018,共10页
Poly(butylene carbonate)(PBC),a biodegradable aliphatic polycarbonate,is limited by its suboptimal thermal and mechanical properties.This study enhanced PBC by incorporating nanoscale nucleating agents combined with i... Poly(butylene carbonate)(PBC),a biodegradable aliphatic polycarbonate,is limited by its suboptimal thermal and mechanical properties.This study enhanced PBC by incorporating nanoscale nucleating agents combined with isothermal annealing and pre-stretching.The results indicate that the dispersion and interfacial interactions of different nucleating agents within the PBC matrix vary significantly.Among them,SiO2 demonstrate good dispersion and compatibility,effectively enhancing the storage modulus and crystallization kinetics.Isothermal annealing and pre-stretching treatments further synergistically improved the crystallinity and mechanical performance of the composites:after annealing,the tensile strength of PBC/SiO2 increased to 61.96 MPa,and after pre-stretching,it reached 83.26 MPa.Dynamic mechanical analysis and differential scanning calorimetry results consistently show that the incorporation of nucleating agents raises the glass transition temperature and thermal stability of the materials.This research provides systematic experimental evidence and process optimization strategies for the high-performance modification of PBC. 展开更多
关键词 Poly(butylene carbonate) Pre-stretching Isothermal annealing Mechanical properties Nucleating agent
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Effect of annealing treatment on microstructure,mechanical properties and biodegradable behaviors of high-performance wrought Zn−0.1Mg alloy 认领 引用
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作者 Huan LIU Li-feng YE +7 位作者 Jing-bo LI Chao SUN Yu-na WU Jia JU Hang TENG Jing-hua JIANG Jing BAI Feng XUE 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2026年第2期451-469,共19页
To investigate the aging mechanisms and elucidate the correlations between unstable microstructure and performance in biodegradable Zn alloys,the accelerated aging experiment was conducted on a high-performance wrough... To investigate the aging mechanisms and elucidate the correlations between unstable microstructure and performance in biodegradable Zn alloys,the accelerated aging experiment was conducted on a high-performance wrought Zn−0.1Mg alloy by annealing at 200℃ for varying durations.The findings reveal that the tensile strength of the alloy rapidly and significantly declines with prolonged annealing time,decreasing from 383 MPa for the as-received alloy to 102 MPa for the alloy subjected to 1440 min of annealing.The primary factors contributing to this considerable reduction in strength are static recrystallization,grain coarsening,and dislocation annihilation.Initially,the ductility of the alloy shows fluctuations,ultimately experiencing a marked decrease after extended annealing.This decline is linked to the grain growth and heightened texture intensity,while the unusual increase in ductility observed between 30 and 120 min of annealing is likely due to the formation of twins.In addition,due to rapid grain growth and an increase in precipitates and twins,the corrosion resistance of the alloy in Hank’s solution has worsened,with the corrosion rate rising from 0.037 to 0.069 mm/a following 300 min of annealing. 展开更多
关键词 Zn−0.1Mg alloy annealing microstructure evolution mechanical properties corrosion behavior
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Design and optimization of area-selective carrier modulation in β-Ga2O3through high temperature oxygen annealing 认领 引用
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作者 Qiuyan Li Qiming He +3 位作者 Jinyang Liu Xuanze Zhou Guangwei Xu Shibing Long 《Chinese Physics B》 SCIE EI CAS CSCD 2026年第5期227-234,共8页
Carrier modulation in beta-gallium oxide(β-Ga2O3)films through an oxygen annealing method is systematically investigated,including annealing time and annealing cap layer(ACL)design.Capacitance-voltage measureme... Carrier modulation in beta-gallium oxide(β-Ga2O3)films through an oxygen annealing method is systematically investigated,including annealing time and annealing cap layer(ACL)design.Capacitance-voltage measurement conducted on vertical SBD structures was used to evaluate the carrier concentration after annealing.The formation of a“surface layer”may suppress the diffusion of oxygen species as the annealing time increases.An 8-hour annealing time resulted in a carrier modulation with an approximately 3-µm-deep low-carrier-concentration layer.The annealing cap layer,consisting of polySi and SiO2,was deposited and patterned to achieve area-selective carrier modulation inβ-Ga2O3.The effective thickness of poly-Si for blocking oxygen diffusion was confirmed by scanning electron microscopy(SEM)for the first time.A definite thickness of SiO2served as both etching stop layer and lift-off layer for poly-Si.According to simulation results,the non-ideal surface caused extra high peak electric field in theβ-Ga2O3device.A combination of an optimized dry etching method and low-compressive-stress deposition technology was employed to eliminate the bird's beak-like shape structure that appeared at the edges of the patterns and bulges on theβ-Ga2O3surface after annealing.The feasibility of the carrier modulation technology enables the diversity ofβ-Ga2O3devices fabrication. 展开更多
关键词 Ga2O3 oxygen annealing carrier modulation power device
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Annealing-modulated localized contact at ITO/p-GaN interface for high-efficiency micro-LEDs at low current density 认领 引用
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作者 Ying Gu Mengyang Huang +6 位作者 Jie Zhou Zheyuan Hu Peng Zhang Min Jiang Jianjun Zhu Wenxian Yang Shulong Lu 《Journal of Semiconductors》 EI CAS CSCD 2026年第7期97-104,共8页
Achieving high emission efficiency at low current densities remains a challenge for micro-LEDs.Here,we demonstrate a controllable interfacial strategy by tuning the annealing temperature of RF-superimposed DC sputtere... Achieving high emission efficiency at low current densities remains a challenge for micro-LEDs.Here,we demonstrate a controllable interfacial strategy by tuning the annealing temperature of RF-superimposed DC sputtered ITO to modulate carrier injection dynamics.STEM analysis reveals 500℃ annealing triggers discrete substitutional In-atom incorporation into the p-GaN lattice,forming localized nanoscale contact regions.This architecture induces a localized carrier injection mechanism that significantly enhances the efficiency of micro-LEDs at low current densities.Specifically,the 500℃-annealed 10μm devices exhibit a dramatic enhancement in light output power(LOP),reaching 1.3×10-1 mW at 5 A/cm2,which is significantly higher than the 5.3×10-4 mW measured for 700°C-annealed devices.Furthermore,the peak efficiency current density(Jpeak)is dramatically shifted from 140 to 17 A/cm2 for 5μm devices.Capacitance-voltage analysis further corroborates the localized carrier injection mechanism.These findings establish contact interfacial modulation as a robust strategy for optimizing micro-LEDs in low-power display applications and tailoring device-level performance across broader optoelectronics. 展开更多
关键词 micro-LEDs gallium nitride indium tin oxide localized contact rapid annealing
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Continuous Stress Annealing Enables Ultralow-Loss Fe-Based Amorphous Alloys With Superior Magnetic Softness for Industrial Manufacturing 认领 引用
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作者 Zhi-Jun Guo Jun Li +8 位作者 Jin-Hong Fu Ji-Feng Zhou Yan-Zhou Fan Xiao-Xuan Yang Ai-Na He Ya-Qiang Dong Qi-Kui Man Qiang Luo Bao-Long Shen 《Rare Metals》 SCIE EI CAS CSCD 2026年第3期868-881,共14页
Fe-based amorphous alloys are attractive soft magnetic materials for next-generation power electronics,yet simultaneously achieving high saturation magnetic flux density(Bs),low coercivity(Hc),and low core loss under ... Fe-based amorphous alloys are attractive soft magnetic materials for next-generation power electronics,yet simultaneously achieving high saturation magnetic flux density(Bs),low coercivity(Hc),and low core loss under scalable processing conditions remains challenging.Here,a composition-stress coupling strategy combining moderate Co substitution with optimized continuous stress annealing(CSA)is proposed to enhance magnetic performance and manufacturability.The optimized Fe81.5-xCoxSi3.7B14.5C0.3(x=1)alloy is designed and exhibits outstanding properties,including low Hc of 0.92 A m-1,high Bs of 1.65 T,ultralow core loss(P10/50)of 0.031 W kg-1at 1.0 T and 50 Hz,and an effective permeability(μe)of 12,200 at 1 A m-1and 1 kHz.Compared with commercial Metglas 2605SA1,Hc and P10/50 are reduced by 46%and 40%,respectively,whereas Bs is enhanced.Multiscale experiments and micromagnetic simulations reveal that optimal Co content and CSA induce mediumrange atomic ordering and magnetoelastic coupling,generating robust uniaxial magnetic anisotropy and coherent three-dimensional magnetization.The CSA process offers a controllable,uniform,and energy-efficient route suitable for large-scale industrial production. 展开更多
关键词 continuous stress annealing Fe-based amorphous soft magnetic alloys magnetic anisotropy magnetic domain evolution
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Optimizing hydrogenation and optical switching performances of FC/Pd/Mg films via vacuum annealing:A Hall-Petch relationship perspective on Mg layer intermediate-temperature recovery 认领 引用
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作者 Nanxiang Deng Wenwei Yang +4 位作者 Dan Wang Yangyang Yu Ying He Juan Chen Liming Peng 《Journal of Magnesium and Alloys》 SCIE EI CAS CSCD 2026年第6期521-531,共11页
Mg-based films are promising candidates for hydrogen storage and switchable mirror applications,but their practical use is hindered by sluggish hydrogenation/dehydrogenation kinetics.The fluorocarbon(FC)/Pd/Mg film wi... Mg-based films are promising candidates for hydrogen storage and switchable mirror applications,but their practical use is hindered by sluggish hydrogenation/dehydrogenation kinetics.The fluorocarbon(FC)/Pd/Mg film with an equiaxed Mg layer exhibits superior roomtemperature hydrogen-chromic properties,and annealing is a critical strategy to tailor its microstructural and functional performances.In this work,vacuum annealing experiments were systematically conducted on FC/Pd/Mg films at temperatures ranging from 50℃ to 250℃ for different durations.The correlation between annealing-induced microstructural evolution of the Mg layer,hydrogenation/optical properties,and the Hall-Petch relationship was established.The Hall-Petch-derived logic,emphasizing grain boundary regulation of mass transport,was employed to interpret the grain size dependent hydrogen diffusion behavior.Among all annealing conditions,the film annealed at 100℃ for 0.5 h achieves the optimal comprehensive performance,with a reflectance conversion range of 67%,a transmittance conversion range of 40%,a complete hydrogenation time of 60 s,and a dehydrogenation sensitivity factor of 7.1.This enhancement is attributed to the intermediate-temperature recovery of the Mg layer,which induces dislocation recombination and grain coarsening(average grain size of 6.7 nm).Guided by the Hall-Petch principle,this grain size balances the grain boundary density and hydrogen diffusion path length,forming a microstructure with moderate defect density and favorable grain boundary density for hydrogen diffusion.This work provides a fundamental understanding of the annealing-microstructure property relationship in FC/Pd/Mg films from the perspective of the Hall-Petch relationship and offers a feasible approach to optimize the functional performances of Mg-based films for hydrogen energy-related applications. 展开更多
关键词 Magnesium film Equiaxed structure Annealing performance Hydrogenation kinetics Hall-Petch relationship
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Insights into the helium bubbles coarsening behavior in the post-irradiated annealing 304L stainless steel processed by laser powder bed fusion 认领 引用
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作者 Si-Yi Qiu Yan-Lin Gu +4 位作者 Yu-Yu Guo Hui Liu Lei Huang Ai-Jun Huang Juan Hou 《Nuclear Science and Techniques》 SCIE EI CAS CSCD 2026年第2期96-111,共16页
350 keV He+ ions were injected into laser powder bed fusion(LPBF)-processed 304L stainless steel and traditional rolled 304L stainless steel with a flux of 1×1017 ions/cm2 at room temperature,followed by... 350 keV He+ ions were injected into laser powder bed fusion(LPBF)-processed 304L stainless steel and traditional rolled 304L stainless steel with a flux of 1×1017 ions/cm2 at room temperature,followed by annealing at 750℃ for 10,100,and 300 h,respectively.The results showed that material swelling due to helium bubble coarsening was almost not observed in either the LPBF or rolled samples after 10 h of annealing duration.Rapid coarsening and swelling of bubbles occurred in the rolled samples,but only moderate bubble growth occurred in the LPBF sample after annealing for 100 h.After annealing for 300 h,the helium bubbles in both samples tended to grow steadily.For 10 h of annealing,the irradiated samples were in a disequilibrium state,and the apparent activation energy(Eact)calculated by the Arrhenius model determined that helium atoms tended to diffuse through the displacement mechanism,and helium bubbles grew under the migration and coalescence(MC)mechanism.With annealing times over 100 h,the high-density dislocations and nano-oxide particles in the LPBF sample still had a strong trapping effect on the movement and growth of helium bubbles.After annealing for 300 h,the cellular subgrains in the LPBF sample decomposed,and the nano-oxide particles had no trapping effect on the helium bubbles.At this time,the dislocation structure played a primary role in suppressing the growth of helium bubbles,and the radiation resistance of the LPBF sample remained superior to that of the rolled samples. 展开更多
关键词 Helium atom diffusion Helium bubble growth Selective laser melting of stainless steel Annealing time Local microstructure
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The coordinated evolution behavior of interface microstructure regulation and bonding strength of hot-spinning Mg/Al composite tubes under annealing 认领 引用 被引量：1
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作者 Jiabin Zheng Xuedao Shu +1 位作者 Yuechen Xu Zixuan Li 《Journal of Magnesium and Alloys》 SCIE EI CAS CSCD 2026年第3期556-579,共24页
In this study,Mg/Al bimetallic composite tubes(BCTs)were successfully fabricated using the hot power spinning(HPS)process,and the width of the interface diffusion zone was effectively controlled by adjusting the annea... In this study,Mg/Al bimetallic composite tubes(BCTs)were successfully fabricated using the hot power spinning(HPS)process,and the width of the interface diffusion zone was effectively controlled by adjusting the annealing time and temperature.The shear fracture mechanism and microstructure evolution of the Mg/Al BCTs were investigated using various microscopic characterization techniques and mechanical tests.The results showed that as the diffusion zone length increased from 6.27μm to 18μm,the shear strength improved from 14.21 MPa to 26.89 MPa.However,when the diffusion band was further expanded,a brittle intermetallic compound(IMC)layer,composed of Mg17Al12and Al3Mg2,formed,which reduced the interfacial bonding strength.When the annealing temperature was raised to 400℃,a Kirkendall void layer developed at the interface,decreasing the shear strength to 4.32 MPa.On the Al side,static recrystallization significantly reduced the grain size,and a more pronounced Goss texture appeared.On the Mg side,a large number of abnormally grown grains were continuously broken down into finer grains under the influence of annealing twins,and the c-axis of the grains showed significant alignment in the rolling direction(RD).When the diffusion layer formed Mg17Al12and Al3Mg2,the interface exhibited a distinct equiaxed crystal morphology,and the grains grew radially along with the expansion of the IMCs.These findings enhance the understanding of the manufacturing process of Mg/Al BCTs and provide valuable insights for regulating the interface structure and bonding strength of Mg/Al BCTs. 展开更多
关键词 Spinning process Composite tube Annealing Bond strength Micro characterization
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Optimization of the giant magneto-impedance effect in Fe20Ni80/Cu composite wires by Joule heating annealing 认领 引用
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作者 Xiaofeng Pu Chaobo Liu +5 位作者 Zhoulu Yu Guozhi Chai Junchen Gao Linchuan Wang Yonggang Liu Daqiang Gao 《Chinese Physics B》 SCIE EI CAS CSCD 2026年第1期590-597,共8页
Giant magnetoimpedance(GMI)sensors are increasingly employed in modern magnetic sensing technologies.However,improving the GMI performance of magnetic cores remains challenging due to intrinsic limitations in material... Giant magnetoimpedance(GMI)sensors are increasingly employed in modern magnetic sensing technologies.However,improving the GMI performance of magnetic cores remains challenging due to intrinsic limitations in material properties and structural stability.In this work,we explore the use of Joule heating to enhance the GMI response of Fe20Ni80/Cu composite wires.By applying a current of 1.8 A for 10 min,notable improvements in magnetic domain uniformity and a reduction in domain spacing are observed.Under these conditions,GMI ratios reach 1870% in the non-diagonal mode and1147%in the diagonal mode,respectively,highlighting their potential for applications in high-precision weak magnetic field sensing. 展开更多
关键词 giant magneto-impedance composite wires Joule heating annealing circumferential hysteresis loops
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Enhanced strength-ductility-toughness synergy of friction stir-welded ultrahigh-strength medium-Mn steel joints via post-weld annealing 认领 引用
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作者 Leping Wang Zhiwei Wang +7 位作者 Peng Xue Hao Zhang Zhen Zhang Fengchao Liu Lihui Wu Dingrui Ni Bolv Xiao Zongyi Ma 《Metals Advances》 SCIE EI CAS CSCD 2026年第5期44-56,共13页
Ultrahigh-strength medium-Mn steels are one of the promising third-generation advanced high-strength steels with strength-ductility-toughness synergy.However,it has been a challenge to preserve the superior mechanical... Ultrahigh-strength medium-Mn steels are one of the promising third-generation advanced high-strength steels with strength-ductility-toughness synergy.However,it has been a challenge to preserve the superior mechanical properties of ultrahigh-strength medium-Mn steels after fusion welding due to the high heat input-induced transformation of metastable microstructures.In this work,ultrahigh-strength medium-Mn steel plates with 1 GPa strength were joined by a solid-state welding technique—friction stir welding.Defect-free joints were fabricated under a specific parameter window.Transformation of austenite to quenched martensite with high hardness occurred in the nugget zones(NZs).All the as-welded joints exhibited equal strengths but significant losses in ductility compared to the base metal(BM).Moreover,the impact energies of the NZs were greatly reduced to less than 6 J,which induced premature failures of the joints.After post-weld annealing at an intercritical temperature,reverse transformation of austenite occurred in the NZs,producing a composited structure of ultrafine ferrite,martensite,and austenite.The impact energies of the annealed NZs increased to over 23 J,which was much higher than the 2.2 J measured in the as-welded counterparts.The hardness of the NZs was significantly reduced,enabling sizeable tensile elongations of the joints close to that of the BM.Consequently,enhanced strength-ductility-toughness synergy of ultrahigh-strength medium-Mn steel joints was achieved by post-weld annealing.This work demonstrates a viable method to fabricate ultrahigh-strength medium-Mn steel joints with high performance. 展开更多
关键词 Ultrahigh-strength medium-Mn steel Friction stir welding Intercritical annealing Microstructure evolution Strength-ductility-toughness synergy
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Enhanced local deformability in ultra-high strength stainless steel via a short-time annealing 认领 引用
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作者 Shuo-Yan Chang Wen-Qi Mao +5 位作者 Yan-Kang Zhao Shuang-Zong Luo Ming Chen Shuai Ma Li-Jia Zhao Qiang Wang 《Journal of Iron and Steel Research International》 SCIE EI CSCD 2026年第7期214-220,共7页
Cold-deformed austenitic stainless steels usually sacrifice deformability for high strength.A short-time annealing at 600℃for 2 min was conducted on cold-rolled 301 stainless steel,which dramatically improved its loc... Cold-deformed austenitic stainless steels usually sacrifice deformability for high strength.A short-time annealing at 600℃for 2 min was conducted on cold-rolled 301 stainless steel,which dramatically improved its local deformability by 270%(from 7.61%to 28%)while maintaining the ultra-high strength level of 2 GPa.Microstructural observation revealed 11.7%reversed austenite formation and a reduction in martensite dislocation density(1.31×1016to 5.5×1015m−2)without recrystallization.The enhanced local deformability is attributed to the synergistic interplay of two key mechanisms:(1)enhanced work-hardening capability due to the formation of martensite produced by cold rolling tempering and(2)the transformation-induced plasticity effect of the reversed austenite,which effectively coordinates localized deformation and suppresses crack nucleation. 展开更多
关键词 High-strength stainless steel Short-time annealing Reversed austenite Transformation-induced plasticity Local deformability
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On effects of composition and single and double annealing of medium-manganese steels for hot press forming:a review 认领 引用
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作者 K.F.Rodriguez-Galeano M.Franceschi +1 位作者 C.Garcia-Mateo R.Rana 《Journal of Iron and Steel Research International》 SCIE EI CSCD 2026年第6期146-168,共23页
Recent breakthroughs in medium-manganese steels have redefined paradigms for metastable austenite engineering in advanced high-strength steels.The present contribution elucidates the thermodynamic and kinetic principl... Recent breakthroughs in medium-manganese steels have redefined paradigms for metastable austenite engineering in advanced high-strength steels.The present contribution elucidates the thermodynamic and kinetic principles governing microstructure evolution during intercritical annealing and subsequent hot/warm forming.Particular attention is given to steel processing,highlighting how double annealing and hot/warm stamping can tailor mechanical properties(e.g.,achieving 1000 MPa of tensile strength with 35%total elongation)through controlled austenite retention.Emerging evidence suggests that strain-induced martensite transformation kinetics during stamping are critically dependent on prior austenite grain morphology—a relationship requiring further atomistic investigation.The discussion analyses different roadmaps for implementing medium-Mn steels for various components in the automotive body-in-white,requiring different properties.It also identifies unresolved questions regarding how the chemistry of the steel,in addition to the processing parameters,influences the retained austenite fraction and its impact on the tensile properties. 展开更多
关键词 Medium-manganese steel Annealing Retained austenite Hot press forming Mechanical property
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Impact of fluorine plasma and electrothermal annealing on the interfacial properties at Ni/β-Ga2O3 Schottky contacts 认领 引用
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作者 Jianggen Zhu Jiaren Feng +7 位作者 Shuting Huang Ning Yang Binju Qiu Enchuan Duan Sheng Liu Bo Zhang Zhaofu Zhang Qi Zhou 《Journal of Semiconductors》 EI CAS CSCD 2026年第2期23-31,共9页
The interfacial properties of Schottky contacts crucially affect the performance of power devices. While a few studies have explored the impact of fluorine on Schottky contacts, a comprehensive theoretical explanation... The interfacial properties of Schottky contacts crucially affect the performance of power devices. While a few studies have explored the impact of fluorine on Schottky contacts, a comprehensive theoretical explanation supported by experimental evidence remains lacking. This work investigates the effects of fluorine incorporation and electrothermal annealing(ETA) on the current transport process at Ni/β-Ga2O3 Schottky contacts. X-ray photoelectron spectroscopy and first-principles calculations confirm the presence of fluorine substitutions for oxygen and oxygen vacancies and their lowering effect on the Schottky barrier heights. Additionally, accurate electrothermal hybrid TCAD simulations validates the extremely short-duration high temperatures(683 K) induced by ETA, which facilitates lattice rearrangement and reduces interface trap states. The interface trap states are quantitatively resolved through frequency-dependent conductance technique, showing the trap density(DT)reduction from(0.88-2.48) × 1011 cm-2·eV-1 to(0.46-2.09) × 1011 cm-2·eV-1. This investigation offers critical insights into the β-Ga2O3 contacts with the collaborative treatment and solids the promotion of high-performance β-Ga2O3 power devices. 展开更多
关键词 Ni/β-Ga2O3interface first-principles calculations Schottky contact fluorine plasma electrothermal annealing
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Improved simulated annealing algorithm for UAV path planning with uncertain flight time 认领 引用
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作者 LI Xiaoduo LUO He +1 位作者 WANG Guoqiang YIN Youlong 《Journal of Systems Engineering and Electronics》 SCIE CSCD 2026年第1期272-286,共15页
Efficient multiple unmanned aerial vehicles(UAVs)path planning is crucial for improving mission completion efficiency in UAV operations.However,during the actual flight of UAVs,the flight time between nodes is always ... Efficient multiple unmanned aerial vehicles(UAVs)path planning is crucial for improving mission completion efficiency in UAV operations.However,during the actual flight of UAVs,the flight time between nodes is always influenced by external factors,making the original path planning solution ineffective.In this paper,the multi-depot multi-UAV path planning problem with uncertain flight time is modeled as a robust optimization model with a budget uncertainty set.Then,the robust optimization model is transformed into a mixed integer linear programming model by the strong duality theorem,which makes the problem easy to solve.To effectively solve large-scale instances,a simulated annealing algorithm with a robust feasibility check(SA-RFC)is developed.The numerical experiment shows that the SA-RFC can find high-quality solutions within a few seconds.Moreover,the effect of the task location distribution,depot counts,and variations in robustness parameters on the robust optimization solution is analyzed by using Monte Carlo experiments.The results demonstrate that the proposed robust model can effectively reduce the risk of the UAV failing to return to the depot without significantly compromising the profit. 展开更多
关键词 unmanned aerial vehicle(UAV)path planning uncertain flight time robust optimization simulated annealing
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Ambient Confined-Space Annealing for Crystallization Enhancement and Defect Passivation in Sb2S3Thin-Film Solar Cells 认领 引用
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作者 Li-Mei Lin Jie Huang +5 位作者 Hu Li Jin-Rui Cai Shui-Yuan Chen Jian-Min Li Xiao-Min Wang Gui-Lin Chen 《Nano-Micro Letters》 SCIE EI CAS CSCD 2026年第10期658-673,共16页
Annealing is a crucial step for recrystallizing Sb2S3and forming high-quality Sb4S6 chain-like crystals,which is essential for achieving high-efficiency photovoltaic devices.However,this process currently faces ... Annealing is a crucial step for recrystallizing Sb2S3and forming high-quality Sb4S6 chain-like crystals,which is essential for achieving high-efficiency photovoltaic devices.However,this process currently faces a fundamental trade-off:Although high-temperature annealing enhances crystallinity,it also introduces severe sulfur and Sb2S3molecular escape,ultimately degrading device performance.To overcome this limitation,we propose a confined-space annealing(CSA)strategy that operates via a dual mechanism.Physical confinement generates a high local vapor pressure,which suppresses Sb2S3re-volatilization and enables recrystallization into large-grain films under atmospheric pressure.Controlled oxygen doping preferentially fills sulfur vacancy sites,suppresses interstitial Sbi defects,and promotes the self-assembly of Sb2O3nano-belts at grain boundaries,effectively blocking leakage paths.As a result,the CSA films exhibit a 60.9%reduction in VS defects and a 40.3%improvement in carrier collection efficiency compared to pristine films.Carbon-based devices fabricated using this approach achieve a power conversion efficiency of 7.17%(VOC=750 mV,JSC=14.26 mA cm-2,FF=62.7%),which is the highest reported value for Sb2S3solar cells fabricated entirely in ambient atmosphere.This work not only offers a practical fabrication route under ambient conditions but also provides fundamental insights into defect passivation in chalcogenide photovoltaics. 展开更多
关键词 Sb2S3 Confined-space annealing Crystal growth Passivation Sb2O3
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Quasi in-situ EBSD analysis of grain growth,grain rotation and special boundaries during annealing of extruded Mg−Zn−Gd alloy 认领 引用
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作者 Wasi ULLAH Muhammad ALI +4 位作者 Ling-yu ZHAO Hong YAN Bo-yu LIU Zhi-wei SHAN Rong-shi CHEN 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2026年第8期2296-2309,共14页
Grain boundary(GB)characteristics in relation to texture development were investigated in an extruded Mg−Zn−Gd alloy subjected to isothermal annealing at 400°C for 5−155 min.Quasi in-situ electron backscatter dif... Grain boundary(GB)characteristics in relation to texture development were investigated in an extruded Mg−Zn−Gd alloy subjected to isothermal annealing at 400°C for 5−155 min.Quasi in-situ electron backscatter diffraction(EBSD)was employed to analyze grain growth(GG),grain rotation,and GB character evolution.GG was found to proceed via two distinct mechanisms:nucleation at triple junction followed by subsequent growth,and GB migration governed by the Burke–Turnbull mechanism.The rotation angle of(0001)basal pole ranged from 31°to 40°,contributing to the observed non-basal texture.Misfit strain(δ)associated with various coincidence site lattice(CSL)boundaries was evaluated,showing that the length fractions forΣ7,Σ13b andΣ45a boundaries decreased in the isothermal annealing due to their higherδvalues,while those forΣ9,Σ21a andΣ43b boundaries increased.Grain growth kinetics was evaluated after isothermal annealing and grain growth exponent was also determined.Collectively,these findings demonstrate that GB characteristics significantly influence texture evolution by promoting energetically favorable boundary configurations. 展开更多
关键词 Mg alloy annealing grain growth grain rotation coincident site lattice boundary
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Effect of annealing temperature on microstructure and mechanical properties of Ti-55511 titanium alloy 认领 引用
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作者 Yang-zhi-hong XIAO Ye-chen DENG +1 位作者 Yi-xin AN Bing-feng WANG 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2026年第8期2323-2334,共12页
The microstructure of Ti-55511 alloy in a wide annealing temperature range of 600−900°C was obtained by gradient heat treatment.The annealing microscopic mechanism map reflecting phase composition and the homogen... The microstructure of Ti-55511 alloy in a wide annealing temperature range of 600−900°C was obtained by gradient heat treatment.The annealing microscopic mechanism map reflecting phase composition and the homogeneity of grain size was constructed.When the temperature exceeds 875°C,the annealing microstructure is a single-phase structure ofβphase.When the annealing temperature is 800−875°C,a small amount ofαlamellar structure is precipitated in theβgrains.When the annealing temperature is 650−800°C,theαGB phase precipitates at theβgrain boundary.When the annealing temperature is 600−650°C,the content of theαphase is high but there is noαGB phase.The sample annealed at 750°C for 120 min has good matching of strength and plasticity,with a yield strength of 1197 MPa and a true fracture strain of 0.31.The annealing microstructure has the best homogeneity degree ofβgrain size.Theαlamellar structure can hinder the dislocation movement,and its grain boundary strengthening effect contributes 207 MPa to strength. 展开更多
关键词 Ti-55511 titanium alloy annealing temperature gradient heat treatment grain size homogeneity
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