Study on Vacuum Diffusion Bonding Tungsten with Copper Interlayer
LIAO Lu1, ZHANG Yongbin1, LI Peng2,*
1 Institute of Machinery Manufacturing Technology, China Academy of Engineering Physics, Mianyang 621900, Sichuan, China 2 School of Materials Science and Engineering, Dalian University of Technology, Dalian 116024, Liaoning, China
Abstract: The excellent physical and chemical properties of tungsten make it widely used in the fields of national defense and military industry. However, it is difficult to achieve reliable connection of tungsten by common welding methods, which limits the application of tungsten. In order to meet the urgent demand of high-performance welding of tungsten, the W/W vacuum diffusion welding was carried out by using copper foil as the interlayer, and the effect of bonding pressure and thicknesses of copper interlayer on joint formation was investigated in detail. The shear strength of joint was tested by an electronic universal testing machine. The microstructure, element diffusion and fracture morphology of diffusion bonding interface were analyzed and observed by electron scanning microscope and electron probe X-ray microanalyzer. The results show that reliable connection of tungsten achieved by adding copper as interlayer. Increasing the thickness of the interlayer can make the contact of W/Cu/W bonding interface more fully, which is more conducive to the mutual diffusion of elements, and further improved the bonding strength of the joint.
1 Wu Z W, Xu Y G, Li M. Hot Working Technology, 2014, 43(12), 5 (in Chinese). 吴泽卫, 徐英鸽, 李明. 热加工工艺, 2014, 43(12), 5. 2 Cai G S, Fu J B, Zhang D X, et al. Aeronautical Manufacturing Technology, 2021, 64(Z2), 14 (in Chinese). 蔡高参, 符巨博, 张东星, 等. 航空制造技术, 2021, 64(Z2), 14. 3 Wang M. Study on the connection process between tungsten and 316L austenitic stainless steel. Ph. D. Thesis, Hefei University of Technology, China, 2018 (in Chinese). 王猛. 钨和316L奥氏体不锈钢连接工艺研究. 博士学位论文, 合肥工业大学, 2018. 4 Gong Y F, Xie L S, Chen M H. Materials for Mechanical Engineering, 2020, 44(2), 22 (in Chinese). 巩云峰, 谢兰生, 陈明和. 机械工程材料 , 2020, 44(2), 22. 5 Guo Y, Gao F Y, Gao Q, et al. Materials Development and Application, 2020, 35(2), 62 (in Chinese). 郭悦, 高福洋, 高奇, 等. 材料开发与应用, 2020, 35(2), 62. 6 Li P, Li J, Xiong J, et al. Materials Characterization, 2012, 68, 82. 7 Zeng S. Microstructure and properties of Zr705 zirconium alloy in vacuum diffusion welding joint. Master's Thesis, Chongqing University, China, 2021 (in Chinese). 曾升. Zr705锆合金真空扩散焊接头组织及性能. 硕士学位论文, 重庆大学, 2021. 8 Guo W, Zhao X H, Song M X. Aerospace Manufacturing Technology, 2004(5), 36 (in Chinese). 郭伟, 赵熹华, 宋敏霞. 航天制造技术, 2004(5), 36. 9 Chen M W, Li M Q. Materials Reports, 2010, 24(9), 101 (in Chinese). 陈梦薇, 李淼泉. 材料导报, 2010, 24(9), 101. 10 Ma Y Z, Wang J N, Liu W S, et al. Rare Metal Materials and Engineerin, 2022, 51(7), 2393. 11 Ma Y Z, Wang Y Y, Liu W S, et al. Transactions of the China Welding Institution, 2013, 34(12), 17 (in Chinese). 马运柱, 王艳艳, 刘文胜, 等. 焊接学报, 2013, 34(12), 17. 12 Chen S, Wang Y, Yang J, et al. Transactions of the China Welding Institution, 2020, 41(11), 47 (in Chinese). 陈帅, 王玥, 杨健, 等. 焊接学报, 2020, 41(11), 47. 13 Chen Z N. Welding engineer handbook, China Machine Press, China, 2009, pp.674 (in Chinese). 陈祝年. 焊接工程师手册, 机械工业出版社, 2009, pp. 674. 14 Li P, Sun H, Dong H, et al. Materials Science & Engineering A, 2021, 814, 141211. 15 Pouranvari M, Ekrami A, Kokabi A H. Science and Technology of Welding and Joining, 2018, 23(1), 13. 16 Xiu L, Wu J. Journal of Fusion Energy, 2015, 34(4), 769.
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2024, Vol. 38 
