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B4C在热喷涂涂层中的应用

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中国表面工程 1999年第1期 46-46页

作者：单际国

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Microstructural evolution and its effect on mechanical properties in different regions of 2219-C10S aluminum alloy TIG-welded joint

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Transactions of Nonferrous Metals Society of China 2020年第10期30卷 2625-2638页

作者： Deng-kui ZHANG Ai-ping WU Yue ZHAO Ji-guo SHAN Zhan-dong WAN Guo-qing WANG Jian-ling SONG Zhong-ping ZHANG Xian-li LIU Department of Mechanical Engineering Tsinghua UniversityBeijing 100084China Key Laboratory for Advanced Materials Processing Technology Ministry of EducationTsinghua UniversityBeijing 100084China State Key Laboratory of Tribology Tsinghua UniversityBeijing 100084China China Academy of Launch Vehicle Technology Beijing 100076China Tianjin Long March Launch Vehicle Manufacturing Co. Ltd.Tianjin 300462China Capital Aerospace Machinery Corporation Limited Beijing 100076China

Microstructural evolution and its effect on mechanical properties in different regions of 2219-C10S aluminum alloy tungsten inert gas(TIG)welded joint were analyzed in *** weld zone(WZ),α+θeutectic structure formed at grain boundaries with no precipitates inside the *** partially melted zone(PMZ),symbiotic eutectic or divorced eutectic formed at grain boundaries and needle-likeθ′phases appeared in the secondary heated *** over aged zone(OAZ),the coarsening and dissolution ofθ′phases occurred and mostθ′phases transformed intoθ*** general heat affected zone(HAZ),θ′phases *** such as the strengthening phases,the grain size,the Cu content in matrix and the dislocation density can affect the mechanical properties in different regions of the ***,a model describing the relationship between mechanical properties of the material and the volume fraction of precipitates,the average diameter of precipitates and the concentration of soluble elements was proposed.

关键词： 2219-C10S aluminum alloy tungsten inert gas arc welding microstructural evolution mechanical properties relationship model

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Effects of weld penetration on tensile properties of 2219 aluminum alloy TIG-welded joints

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Transactions of Nonferrous Metals Society of China 2019年第6期29卷 1161-1168页

作者： Deng-kui ZHANG Yue ZHAO Ming-ye DONG Guo-qing WANG Ai-ping WU Ji-guo SHAN Dan-yang MENG Xian-li LIU Jian-ling SONG Zhong-ping ZHANG Department of Mechanical Engineering Tsinghua University Beijing 100084 China Key Laboratory for Advanced Materials Processing Technology Ministry of EducationTsinghua University Beijing 100084 China China Academy of Launch Vehicle Technology Beijing 100076 China State Key Laboratory of Tribology Tsinghua University Beijing 100084 China Tianjin Long March Launch Vehicle Manufacturing Co. Ltd. Tianjin 300462 China Capital Aerospace Machinery Corporation Limited Beijing 100076 China

Numerical simulation and experimental methods were used to investigate the effects of weld penetration on tensile properties of 2219 aluminum alloy tungsten inert gas(TIG)welded *** results show that when other geometric parameters are consistent,within a certain range,the deeper the weld penetration of the capping weld is,the lower the tensile strength of the j oint *** deeper weld penetration of the capping weld can cause the more concentrated stress at the weld toe and the joint is more likely to crack *** on necessary assumptions,a model for analyzing the mathematical relation between the weld penetration of the capping weld and the tensile strength of the joint was proposed to validate the experimental results. The decrease of weld penetration of capping weld can be controlled by decreasing welding current,helium content or increasing welding voltage.

关键词： 2219-C10S aluminum alloy weld penetration tensile strength numerical simulation correlation

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