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Effect and mechanism of Ti−O solid solution layer on interfacial bonding strength of cold roll bonded titanium/stainless steel laminated composite plate 认领 引用
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作者 Zhi-yan YANG Xue-feng LIU +1 位作者 Hong-ting CHEN Xin MA 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2026年第1期171-182,共12页
Titanium plates with a Ti−O solid solution surface-hardened layer were cold roll-bonded with 304 stainless steel plates with high work hardening rates.The evolution and mechanisms affecting the interfacial bonding str... Titanium plates with a Ti−O solid solution surface-hardened layer were cold roll-bonded with 304 stainless steel plates with high work hardening rates.The evolution and mechanisms affecting the interfacial bonding strength in titanium/stainless steel laminated composites were investigated.Results indicate that the hardened layer reduces the interfacial bonding strength from over 261 MPa to less than 204 MPa.During the cold roll-bonding process,the hardened layer fractures,leading to the formation of multi-scale cracks that are difficult for the stainless steel to fill.This not only hinders the development of an interlocking interface but also leads to the presence of numerous microcracks and hardened blocks along the nearly straight interface,consequently weakening the interfacial bonding strength.In metals with high work hardening rates,the conventional approach of enhancing interface interlocking and improving interfacial bonding strength by using a surface-hardened layer becomes less effective. 展开更多
关键词 titanium/stainless steel laminated composite plate Ti−O solid solution hardened layer interlocking interface formation mechanism interfacial bonding strength
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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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Constructing quasi-vertical epoxy-pins at bonding interface to improve bonding strength of aluminum alloy and carbon fiber reinforced plastics 认领 引用
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作者 Jinheng ZHANG Fei CHENG +10 位作者 Shihao ZUO Wenyi HUANG Yi JI Guangming YANG Jiaxin HE Sidra ASHFAQ Gang TAO Boris FEDULOV Alexey FEDORENKO Hao LIU Xiaozhi HU 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2025年第9期505-519,共15页
This study focused on the various surface treatments of grinding,Na OH etching,HCl pickling,micro-arc oxidation and anodic oxidation to strengthen adhesive bonding joint of Aluminum(Al)substrate and Carbon Fiber Reinf... This study focused on the various surface treatments of grinding,Na OH etching,HCl pickling,micro-arc oxidation and anodic oxidation to strengthen adhesive bonding joint of Aluminum(Al)substrate and Carbon Fiber Reinforced Plastics(CFRP).Different surface conditions were created by these treatments and simple Resin Pre-Coating(RPC)technique was further used to reduce the potential void defects at the root of those micro-cavities.Carbon Nanotubes(CNTs)were guided into the etched micro-cavities to construct quasi-Z-directional fiber bridging and form the“CNT-reinforced epoxy-pins”.The surface performance testing results imply that anodic oxidation of Al substrate created relatively even and continuous channels with higher hardness and better wettability among these treatments,which could provide quasi-vertical spaces for containing epoxy adhesive or CNTs.The single lap shear test results show combined treatments of anodic oxidation and upgraded RPC with CNTs technique on Al substrate yielded the highest bonding strength of 21.8 MPa(up to 243.3% greater than base strength).The constructed through-the-thickness“epoxy-pins”or“CNT-reinforced epoxy-pins”contributed to failure modes changing from complete debonding failure of Al substrate to peeled-off shallow fiber or delamination failure of CFRP panel.The combined treatments could be utilized to manufacture high-performance Al-CFRP composites for aviation industry application. 展开更多
关键词 Bonding strength improvement Epoxy-pins Resin pre-coating Surface treatment Through-the-thickness
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Additive manufacturing of steel–copper functionally graded material with ultrahigh bonding strength 认领 引用 被引量：13
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作者 Chaolin Tan Youxiang Chew +4 位作者 Guijun Bi Di Wang Wenyou Ma Yongqiang Yang Kesong Zhou 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2021年第13期217-222,共6页
Additive manufacturing enables processing of functionally graded materials(FGMs)with flexible spatial design and high bonding strength.A steel-copper FGM with high interfacial strength was developed using laser powder... Additive manufacturing enables processing of functionally graded materials(FGMs)with flexible spatial design and high bonding strength.A steel-copper FGM with high interfacial strength was developed using laser powder bed fusion(LPBF).The effect of laser process parameters on interfacial defects was evaluated by X-ray tomography,which indicates a low porosity level of 0.042%therein.Gradient/fine dendritic grains in the interface are incited by high cooling rates,which facilitates interface strengthening.Multiple mechanical tests evaluate the bonding reliability of interface;and the fatigue tests further substantiate the ultrahigh bonding strength in FGMs,which is superior to traditional manufacturing methods.Mechanisms of the high interfacial bond strength were also discussed. 展开更多
关键词 Laser powder bed fusion Steel–copper multi-materials Fatigue Functionally graded materials Bonding strength
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Lightweight epoxy-based abradable seal coating with high bonding strength 认领 引用 被引量：10
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作者 Yun-Qi Tong Qiu-Sheng Shi +3 位作者 Mei-Jun Liu Guang-Rong Li Chang-Jiu Li Guan-Jun Yang 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2021年第10期129-137,共9页
To gain high efficiency and low fuel consumption, aluminum-based abradable seal coatings had been widely used in the compressor casing of aero engines or gas turbines owing to the low elastic modulus. However, the adh... To gain high efficiency and low fuel consumption, aluminum-based abradable seal coatings had been widely used in the compressor casing of aero engines or gas turbines owing to the low elastic modulus. However, the adhesive transfer phenomenon frequently occurs when the radial rubbing generates between titanium alloy blade tips and aluminum-based coating. It tends to increase scratch force and results in blades vibration and even engine jam. To eliminate this problem, a new lightweight epoxy-based abradable seal coating with high bonding strength was developed by an effective and porosity controllable mixing process that distributes spherical pores uniformly in the continuous matrix. A lightweight coating of 63% porosity with a hardness of 33.1(HR15 Y) can be reached when the content of hollow microspheres is 31 wt.%. The coating density is 0.5 g/cm3 and the bonding strength is as high as 18 MPa.The performance of the epoxy-based coating is comprehensively better than aluminum-based coatings in five essential indices. This study is expected to provide a new technical path for obtaining high-quality abradable seal coatings to guarantee the efficient and safe operation of compressors. 展开更多
关键词 Epoxy-based seal coating Porosity HR15Y Lightweight High bonding strength
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Effects of cerium on microstructure and bonding strength of Cu-14Al-4.5Fe bronze plasma sprayed coating 认领 引用 被引量：7
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作者 李文生 路阳 +1 位作者 袁柯祥 苑重光 《Journal of Rare Earths》 SCIE EI CAS CSCD 2011年第4期363-369,共7页
Cu-14Al-4.5Fe bronze powders with and without 0.6% Ce were prepared and their coatings were fabricated on 45# carbon steel substrate by atmospheric plasma spraying. The effects of rare earth Ce on the coating interfac... Cu-14Al-4.5Fe bronze powders with and without 0.6% Ce were prepared and their coatings were fabricated on 45# carbon steel substrate by atmospheric plasma spraying. The effects of rare earth Ce on the coating interface bonding strength, coatings and bonding interface vertical sections microstructure were investigated by tensile machine, X-ray diffraction analysis, scanning electron microscopy （SEM） and electronic probe microanalysis （EPMA）. The results showed that the shape of powders was more spherical like, and the coating’s hardness and interface bonging tensile strength would be improved to 8.9% and 17.4%, respectively, higher than that of the Cu-14Al-4.5Fe coating without 0.6% Ce added. The refined of κ phases, well distributed matrix phases in coatings and the promotion of Fe, Al elements diffusion led to the improvement in interface bonding strength and hardness of the Cu-14Al-4.5Fe coating with addition of 0.6% Ce, which hardened and strengthened the coating. 展开更多
关键词 rare earth Cu-14Al-4.5Fe alloy microstructure bonding strength rare earths
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Bonding strength of Invar/Cu clad strips fabricated by twin-roll casting process 认领 引用 被引量：4
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作者 Peng CHEN Hua-gui HUANG +2 位作者 Ce JI Xu ZHANG Zhong-hua SUN 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2018年第12期2460-2469,共10页
Based on traditional twin-roll casting process,Invar/Cu clad strips were successfully fabricated by using solid Invar alloy strip and molten Cu under conditions of high temperature,high pressure and plastic deformatio... Based on traditional twin-roll casting process,Invar/Cu clad strips were successfully fabricated by using solid Invar alloy strip and molten Cu under conditions of high temperature,high pressure and plastic deformation.A series of tests including tensile test,bending test,T-type peeling test and scanning electron microscope(SEM)and energy dispersive spectrometer(EDS)measurements were carried out to analyze the mechanical properties of Invar/Cu clad strips and the micro-morphology of tensile fracture surfaces and bonding interfaces.The results indicate that no delamination phenomenon occurs during the compatible deformation of Invar/Cu in bending test and only one stress platform exists in the tensile stress-strain curve when the bonding strength is large.On the contrary,different mechanical properties of Invar and Cu lead to delamination phenomenon during the uniaxial tensile test,which determines that two stress platforms occur on the stress-strain curve of Invar/Cu clad strips when two elements experience necking.The average peeling strength can be increased from13.85to42.31N/mm after heat treatment at800℃for1h,and the observation of the Cu side at peeling interface shows that more Fe is adhered on the Cu side after the heat treatment.All above illustrate that heat treatment can improve the strength of the bonding interface of Invar/Cu clad strips. 展开更多
关键词 twin-roll casting Invar/Cu clad strip heat treatment bonding interface bonding strength
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Effect of Surface Treatment on Bonding Strength of Aluminum-Magnesium Hot-Rolled Composite Plate 认领 引用 被引量：2
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作者 Yang Bin Bai Wenbo +2 位作者 Zheng Yang Yu Chao Xiao Hong 《稀有金属材料与工程》 SCIE EI CAS CSCD 北大核心 2024年第8期2167-2173,共7页
The effect of different surface treatments on the bonding strength of composite plates was investigated under the conditions of 400℃ and reduction ratio of 45%.Results show that the wire brush grinding treatment can ... The effect of different surface treatments on the bonding strength of composite plates was investigated under the conditions of 400℃ and reduction ratio of 45%.Results show that the wire brush grinding treatment can only eliminate the oxide film on the plate surface,but it can hardly produce a hard layer on the plate surface.The bonding effect depends on the element diffusion promoted by the close contact between the metals on both sides of the interface.After anodic oxidation,there is a hard layer on the metal surface,and the hard layer broken during the rolling process forms a mechanical occlusion at the bonding interface.However,the hard layer cannot form an effective combination with the metal at the interface,and the bonding can only occur in the fresh metal bonding area at the crack of the hard layer.The acid-alkali washing treatment can completely remove the hard layer on the surface of both alloys without increasing the surface roughness of the plate,and the metal on both sides of the interface is more closely bonded during the rolling process.The optimal bonding strength can be obtained by surface treatment of acid-alkali washing for the aluminum-magnesium hot-rolled bonding. 展开更多
关键词 aluminum-magnesium composite plate surface treatment hard layer bonding strength
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The study on interfacial bonding strength of Ag-Ni, Ag-Cu in cold pressure welding 认领 引用 被引量：1
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作者 李云涛 杜则裕 陈丽萍 《China Welding》 EI CAS 2003年第1期20-23,共4页
The area of combination actually is a kind of interfacial phenomena that exist on the surface or thin film. The properties of interface have important effect on the whole welded joint, even decide directly the interfa... The area of combination actually is a kind of interfacial phenomena that exist on the surface or thin film. The properties of interface have important effect on the whole welded joint, even decide directly the interfacial bonding strength. The bonding strength of metals in cold pressure welding such as Ag Ni (they are hardly mutual soluble) and Ag Cu(they are limited soluble) are discussed in this paper. The results of the tensile test suggest that two kinds of welded joints have enough strength to satisfy with the demand for being used. Moreover, thermodynamics, crystal logy, physics and metal electronic microscopic analysis etc are adopted to further calculate the bonding strength. The results of test and theoretical analyses prove that Ag Ni, Ag Cu, especially, for Ag Ni can form strong welded joint which is higher than that of the relative soft base metals in cold pressure welding. 展开更多
关键词 cold pressure welding interface bonding strength
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Bonding strength of graded anti-corrosive coatings of fluoroethylenepropylene (FEP)/polyphenylene sulfide (PPS) 认领 引用 被引量：1
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作者 Jie Bian Weiqiang Wang +1 位作者 Congsheng Guan Yonghui Zhao 《Journal of University of Science and Technology Beijing》 2005年第6期572-576,共5页
Fluororesin-based anti-corrosive coatings including graded FEP/PPS were prepared on carbon steel by melt powder coating, the bonding strength of all coating systems was determined by the pull-off test. It is found tha... Fluororesin-based anti-corrosive coatings including graded FEP/PPS were prepared on carbon steel by melt powder coating, the bonding strength of all coating systems was determined by the pull-off test. It is found that the poor adhesion of fluororesin coatings to metallic substrates is improved obviously by the graded coating structure of FEP/PPS, and the bonding strength reaches up to 11.8 MPa for the five-layer system. Examination by electron probe microanalysis （EPMA） verifies that the distribution of main components is graded in the five-layer system, which is responsible for the enhancement of the interfacial bonding. 展开更多
关键词 fluororesin anti-corrosive coating graded coating structure polyphenylene sulfide （PPS） bonding strength
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Bonding strength in carbon steel sandwich panels under condition of diffusion-rolling with small reduction 认领 引用 被引量：1
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作者 LIU Jing HAN Jing-tao FU Ding-mei 《Journal of Central South University of Technology》 2005年第4期393-395,共3页
One of the key problems by diffusion-rolling bonding with small reduction for carbon steel plates is the bonding assistant coat.Abonding assitant coat used below 850℃was developed.It contained copper as basic element... One of the key problems by diffusion-rolling bonding with small reduction for carbon steel plates is the bonding assistant coat.Abonding assitant coat used below 850℃was developed.It contained copper as basic element and zinc as main alloy element.Other small elements and rear metals were added to decrease the melting point and to obtain a better clouding and bigh plasticity.Based on the theory of brazing and transient liquid diffusion welding,two carbon steel plates were rolled with small reduction by using self-made bonding assistant coat.Temperature,pressure and holding time are the main technology parameters for controlling the process of diffusion-rolling.The results show that the bonding strength is the greatest when the bonding temperature is 830℃,holding time is 3 min and the reduction rate is 9%. 展开更多
关键词 honding assistant coat diffusion-rolling steel sandwich panels bonding strength
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Interfacial Bonding Strength of TiN Film Coated on Si_3N_4 Ceramic Substrate 认领 引用
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作者 Dejun KONG Yongkang ZHANG +1 位作者 Zhigang CHEN Jinzhong LU 《Journal of Materials Science & Technology》 SCIE EI CAS 2007年第4期487-490,共4页
The fraction of TiN/Si3N4 in the cross section was observed with scanning electric microscope （SEM）, and residual stresses of TiN coated on the surface of Si3N4 ceramic were measured with X-ray diffraction （XRD）.T... The fraction of TiN/Si3N4 in the cross section was observed with scanning electric microscope （SEM）, and residual stresses of TiN coated on the surface of Si3N4 ceramic were measured with X-ray diffraction （XRD）.The hardness of TiN film was measured, and bonding strength of TiN film coated on Si3N4 substrate was measured by scratching method. The formed mechanism of residual stress and the failure mechanism of the bonding interface in the film were analyzed, and the adhesion mechanism of TiN film was investigated preliminarily. The results show that residual stresses of TiN film are all behaved as compressive stress, and TiN film is represented smoothly with brittle fracture, which is closely bonded with Si3N4 substrate. TiN film has high hardness and bonding strength of about 500 MPa, which could satisfy usage requests of the surface of cutting Si3N4 ceramic. 展开更多
关键词 TiN film Bonding strength X-ray diffraction （XRD） Residual stress ceramic substrate
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The effect of zirconium coating on bonding strength of porcelain to titanium 认领 引用
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作者 段珍珍 孙大千 +2 位作者 邱小明 谷晓燕 孙德新 《China Welding》 EI CAS 2008年第3期10-14,共5页
The Zr coating was deposited on titanium surface using the magnetron sputtering technique. Effects of Zr coating on microstructure and mechanical properties of porcelain fired to titanium have been investigated. The r... The Zr coating was deposited on titanium surface using the magnetron sputtering technique. Effects of Zr coating on microstructure and mechanical properties of porcelain fired to titanium have been investigated. The results show that interdiffusion of elements occurs during porcelain firing, and the Zr coating can effectively protect titanium surface from excess oxidation. The strength of bond zone with Zr coating deposited for 1 hour reaches 29. 7 MPa, which has increased by 26.4% as compared with that of bond zone without coating （23.5 MPa）. 展开更多
关键词 titanium porcelain Zr coating bonding strength
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Effect of Curing Regime on Bonding Strength of EVA Modified Mortar to Tile 认领 引用
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作者 何代华 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2010年第2期346-348,共3页
Ethylene-Vinyl Acetate （EVA） redispersible powder and latex were used to modify mortar. Three kinds of curing regimes： standard curing, high temperature curing and freeze-thaw circle curing were adopted to cure the... Ethylene-Vinyl Acetate （EVA） redispersible powder and latex were used to modify mortar. Three kinds of curing regimes： standard curing, high temperature curing and freeze-thaw circle curing were adopted to cure the bonded samples. Bonding strength of EVA modified mortar was tested at 28 days. The development of bonding strengths under all three curing regimes were discussed and compared. The experimental results show that bonding strength increases with the increase of EVA content in mortar. The curing regime used within 28 days is critical according to the bonding strengths values under three curing regimes for different ages. The reasons of that the EVA can improve the bonding strength were analyzed. 展开更多
关键词 EVA redispersible powder latex bonding strength curing regime
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Development of anti-oxidation Ag salt paste for large-area(35×35 mm2)Cu-Cu bonding with ultra-high bonding strength 认领 引用 被引量：3
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作者 Bowen Zhang Chuantong Chen +3 位作者 Takuya Sekiguchi Yang Liu Caifu Li Katsuaki Suganuma 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2022年第18期261-270,共10页
In this paper,by proposing a novel and low-cost Ag salt paste,a robustly and large-area(35×35 mm2)bare Cu to Cu bonding was realized under a low sintering pressure of 0.8 MPa and a low sintering temperature of... In this paper,by proposing a novel and low-cost Ag salt paste,a robustly and large-area(35×35 mm2)bare Cu to Cu bonding was realized under a low sintering pressure of 0.8 MPa and a low sintering temperature of 300℃ in air atmospheric conditions.The relationship between the bonding strength and microstructure changes of sintered Ag under various bonding conditions was investigated in detail.The large-area bonded plate exhibits low porosity about 10%and low percentage of voids,which result in ultra-high bonding strength over 58 MPa.More importantly,the introduction of reducing agent formic acid(CH2O2)and the low porosity successfully improve the anti-oxidation of novel Ag salt paste during sintering process,result in pure Cu-Ag-Cu bonding.The cross-section of the Ag joints was obtained to explain the bonding pattern,in which Cu was oxidized only at the edge of the sintering interface,and no Cu oxide generated in middle bonding section.The development of novel Ag salt paste successfully addresses the energy-intensive process and low bonding strength faced by large-scale sintering,which greatly promotes the high-temperature applications of power device. 展开更多
关键词 Large-area bonding Anti-oxidation Cu-cu joint Ag salt paste Bonding strength
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Improvement of Bonding Strength of Horizontal Twin-Roll Cast Steel/Aluminum Clad Sheet by Electromagnetic Fields 认领 引用
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作者 Gang Chen Jin-Tao Li Guang-Ming Xu 《Acta Metallurgica Sinica(English Letters)》 SCIE EI CAS CSCD 2018年第1期55-62,共8页
Electromagnetic field is an available online method to increase bonding strength of clad sheet manufactured by horizontal twin-roll casting （HTRC）. In this paper, an electric current pulse （ECP） and a complex fie... Electromagnetic field is an available online method to increase bonding strength of clad sheet manufactured by horizontal twin-roll casting （HTRC）. In this paper, an electric current pulse （ECP） and a complex field （static magnetic field （SMF） together with ECP） are exerted during HTRC of steel/aluminum clad sheet. The produced clad sheet has good appearance, and no visible defects exist at the bonding interface. The inter-diffusion zone at Fe/A1 interface in ECP and SMF＋ECP sheets is 3 and 4 μm, respectively, and the latter increases slightly compared with that in non-field sheet. The average peel strengths （APS） of ECP and SMF＋ECP sheet are 14 and 21 N/mm, respectively, which increase by 2 and 9 N/mm compared with 12 N/mm of non-field sheet. The APS increment in SMF＋ECP sheet is resulted from the increment of interface bonding spots and the enhancement of inter-diffusion zone width. 展开更多
关键词 Clad sheet Twin-roll casting Electromagnetic field Bonding strength
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Atom Diffusion Behavior and Bonding Strength of Ag/Cu Composite Interface 认领 引用
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作者 曾建谋 《Rare Metals》 SCIE EI CAS 1998年第3期79-82,共4页
The atom (Ag,Cu) diffusion behavior and the effect of technology on the interface of rolled Ag/Cu composite contact were investigated. The concentration of Ag and Cu atoms near the interface was determined with electr... The atom (Ag,Cu) diffusion behavior and the effect of technology on the interface of rolled Ag/Cu composite contact were investigated. The concentration of Ag and Cu atoms near the interface was determined with electron probe. The bonding strength of composite interface was tested and the fracture in tensile sample was observed by SEM. The results show that there was inter diffusion of Ag and Cu atoms on the interface, which formed compact layer with high bonding strength of 98 MPa. The practical application proved that the Ag/Cu composite interface is reliable. 展开更多
关键词 Ag Cu composite interface Contact materials Atom diffusion Bonding strength
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Study on Welding-Bead Bonding Strength of Laser-Stacking Copper-Aluminum Heterogeneous Electrode Plates 认领 引用
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作者 Shang-Wu Tsai Shih-Kai Chien +2 位作者 Kun-Tso Chen Tsung-Ying Tsai Wen-Cheng Tseng 《Journal of Mechanics Engineering and Automation》 2021年第5期121-134,共14页
In this paper,two types of copper-aluminum heterogeneous electrode plates are stacked and the finite element analysis(FEA)models of two different laser welding conditions are built by using SYSWELD welding simulation ... In this paper,two types of copper-aluminum heterogeneous electrode plates are stacked and the finite element analysis(FEA)models of two different laser welding conditions are built by using SYSWELD welding simulation software to calculate the depth of the welding bead and the temperature distribution of the welding surface.Then,the residual stress analysis data of the welded area are exported and the residual stress is applied to the welded specimen for CAE analysis to ensure that the welding bonding strength meets the design target of a shear force of 500 N or higher.The copper-aluminum laser-stacking simulation technique in this paper can be applied to the manufacturing of copper-aluminum heterogeneous laser-welded electrodes and series-connected electrodes of automotive lithium-ion power battery modules,providing an effective analysis method for welding bonding-strength. 展开更多
关键词 Copper-aluminum heterogeneous laser welding simulation welding bonding strength analysis finite element method
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Experimental study on the effect of oil based filtercake on bonding strength at wellbore second interface 认领 引用 被引量：1
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作者 Kevin Nsolloh Lichinga Athanas Christopher Ntawanga 《Natural Gas Industry B》 2021年第6期680-688,共9页
The integrity of the oil-gas wellbore is critically depending on the quality of the binding between cement and rock materials.Weak bond between cement and formation may lead to the potential leakage of high-pressure f... The integrity of the oil-gas wellbore is critically depending on the quality of the binding between cement and rock materials.Weak bond between cement and formation may lead to the potential leakage of high-pressure formation fluids through cracks and micro-annulus formed at the interface which results into blowout and groundwater contamination.Failure to properly displace mud prior to cementing can lead to poor bonding at the second interface(SI)of the wellbore.The main purpose of this study is to quantify the impact of oil based-filtercake on the bonding quality at the wellbore Second Interface during the drilling of sandstone reservoir well by using shear bond measurements and material characterization techniques.The results indicated that,the presence of oil based-filtercake at the SI has a detrimental effect on shear bond strength making it as weakest point of adhesion.The tested Blank samples had higher bond strength compared to treated(oil based filtercake)samples.The low bond strength for filtercake system was due to existence of oil based filtercake films which hindered the totally cement hydration process to form a strong bond as the oily film cannot allow the interact with aqueous cement slurry material to complete the hydration process.The FTIR analysis showed that,the lower transmittance(35%)at 1091 cm-1 band(SieO)of mud treated samples revealed the low content of chemical binder material(Calcium Silicate Hydrate-CSH)at the interface while the blank samples gave 62% at 1088 cm-1 band(SieO)showing the high content of CSH at the interface which led high bond strength.The results show that oil-based filtercake has a significant detrimental effect on shear bond strength of the second interface. 展开更多
关键词 Calcium silicate hydrate Interlayer Shear bond strength Oil based filtercake Simulated wellbore
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Cementing interfaces debonding during methane deflagration fracturing based on measured bond strength and pressure data 认领 引用
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作者 Kun Jiang Shouchun Deng +3 位作者 Yixuan Li Xiaofang Jiang Weiqi Li Haibo Li 《Journal of Rock Mechanics and Geotechnical Engineering》 SCIE CSCD 2026年第4期2666-2685,共20页
The expansion of shale gas exploration into deeper reservoirs introduces increasing cementing challenges,primarily caused by cement sheath integrity failure through interfacial debonding.This study performed mechanica... The expansion of shale gas exploration into deeper reservoirs introduces increasing cementing challenges,primarily caused by cement sheath integrity failure through interfacial debonding.This study performed mechanical property characterization and interfacial bond strength evaluation of compositetoughened oil well cement to quantify the mechanical behavior of cement sheaths and cementing interfaces.Cavity pressure experiments were performed to obtain pressure-time curves of methane deflagrationfracturing under different fillingpressures.A whole-life-cycle well integrity model was established using a phased modeling approach,with the measured pressure data as input loads,and the cohesive zone model(CZM)was applied to simulate interfacial debonding evolution.Parametric analysis focused on the effects of perforation section length,deflagrationparameters(peak pressure,duration),and cement formulations on interfacial debonding.Numerical results reveal that the casingcement interface exhibits longer axial debonding lengths than the cement-formation interface,while the latter experiences faster debonding propagation.Sensitivity analysis highlights that composite toughened cement sheaths with reduced elastic modulus and enhanced bond strength significantly enhance wellbore integrity under methane deflagration.Interfacial debonding can be mitigated by optimizing perforation section length in staged fracturing operations and carefully controlling deflagration peak pressure and duration.This work enables predictive analysis of cement sheath debonding development and integrity evaluation,offering practical strategies for optimizing methane deflagration fracturing operations. 展开更多
关键词 Bond strength Cohesive zone method(CZM) Cement interface debonding Methane deflagration fracturing Wellbore integrity
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