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| Investigation on Static Fusion Welding Performance of Cu-W Composite with Microscopically Oriented Skeleton Structures |
HAN Ying1( ), QIN Jie1, CAO Yundong1, LI Shujun2() |
1.School of Electrical Engineering, Shenyang University of Technology, Shenyang 110870, China
2.Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China |
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Cite this article:
HAN Ying, QIN Jie, CAO Yundong, LI Shujun. Investigation on Static Fusion Welding Performance of Cu-W Composite with Microscopically Oriented Skeleton Structures. Chinese Journal of Materials Research, 2022, 36(10): 769-776.
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Abstract The Cu-W composites with three different microstructures, namely quadrilateral, hexagonal and rhomboidal microdirectional skeleton structure were designed and prepared, and their static welding properties were investigated, by taking the Cu-W composites with disordered skeleton structure as comparison. According to the principle of fluid mechanics, the variation of temperature and conduction heat flux for composites of various macrostructures with time were analyzed by means of finite element method, and their thermal conductivity was calculated. The results show that the contact resistance of Cu-W composites with microscopically oriented skeleton structure is lower and more stable, among others, the composite with rhombic dodecahedral skeleton has the lowest contact resistance, and where may exist a heat conducting chain, and even an uniformly distributed heat conducting network, which reduces the regional thermal resistance to a greater extent. According to the Marangoni effect, the molten pool morphology of the composites with different microstructures is compared, and it is found that the regular distribution of Cu and W two-phase materials can facilitate the reduction of the size of aggressed area induced by the static fusion welding, accordingly the rhomboidal dodecahedron matrix composites have the lowest aggressed area.
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Received: 09 October 2021
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| Fund: National Natural Science Foundation of China(51977132);Natural Science Foundation of Liaoning Province(2019-MS-249 & LACT-007);Opening Project of National Key Laboratory of Shock Wave and Detonation Physics(6142A03203002) |
About author: LI Shujun, Tel: 13840185937, E-mail: shjli@imr.ac.cn
HAN Ying, Tel: 13478250188, E-mail: hany_dq@sut.edu.cn;
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