Effect of Compression on Microstructure and Properties of Single Crystal Copper Cold Pressure Welding Joints
HUANG Yong1,2, RAN Xiaolong1, YAN Xiaojuan1
1 State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals of Ministry of Education, Lanzhou University of Technology, Lanzhou 730050, China 2 Key Laboratory of Nonferrous Metal Alloys and Processing of Ministry of Education, Lanzhou University of Technology, Lanzhou 730050, China
Abstract: Single crystal copper was connected using cold pressure welding and the influence of compression on the joint microstructure and properties were studied in order to achieve effective connection and not lose the conductivity of single crystal high purity copper as possible. The results showed that an effective joint could not be formed during the cold pressure welding joint connection of single crystal copper when the compression was small. Only when the amount of compression reached a critical value, an effective joint could be formed. In the axial direction of joint, the base material region and the deformation region still maintained a single crystal structure, but their grain orientations changed. With the increase of deformation, the single crystal structure at the joint interface was destroyed and the fine recrystallized grains at the joint increased and then decreased. It consisted of a large number of fine grains with different orientations and a deformation band structure. The grain size at the interface was gradually reduced, and the tensile strength of joint was increased and then slightly decreased. The cold pressure welding joints kept good electrical conductivity.
黄勇, 冉小龙, 严晓娟. 压缩量对单晶铜冷压焊接接头组织及性能的影响[J]. 材料导报, 2020, 34(12): 12110-12114.
HUANG Yong, RAN Xiaolong, YAN Xiaojuan. Effect of Compression on Microstructure and Properties of Single Crystal Copper Cold Pressure Welding Joints. Materials Reports, 2020, 34(12): 12110-12114.
1 Fukuda Y, Oh-Ishi K, Furukawa M, et al. Journal of Materials Science,2007,42(5),1501. 2 Sun L X, Tao N R, Lu K. Scripta Materialia,2015,99,73. 3 Zhang L X, Sun Z, Xue Q, et al. Materials and Design,2015,90,949. 4 Ma T J, Chen X, Li W Y, et al. Materials & Design,2016,89,85. 5 Ma T, Yan M, Yang X, et al. Materials & Design,2015,85,613. 6 Unal A, Altan E. In: 2nd National Welding Symposium, Istanbul, pp.336. 7 Mahabunphachai S, Koc M, Ni J. In: ASME 2007 International Manufacturing Science and Engineering Conference, Atlanta,2007,pp.227. 8 Eizadjou M, Danesh Manesh H, Janghorban K. Materials and Design,2008,29(4),909. 9 Hosseini S A, Hosseini M, Danesh Manesh H. Materials & Design,2011,32(1),76. 10 Mehr V Y, Toroghinejad M R, Rezaeian A. Materials and Design,2014,53(6),174. 11 Schmidt H C, Rodman D, Grydin O, et al. Advanced Materials Research,2014,966-967,453. 12 Tabata T, Masaki S, Azekura K. Materials Science and Technology,1989,5(4),377. 13 Zhou Q. Plastic deformation microstructure and control, Science Press, China,2015(in Chinese). 周清.塑性变形微观组织及控制,科学出版社,2015. 14 Wang W W. Ultra-fine grain pure copper high strain rate deformation. Master's Thesis, Nanjing University of Science and Technology, China,2013(in Chinese). 王稳稳.超细晶纯铜高应变速率变形.硕士学位论文,南京理工大学,2013. 15 Lilleby A O/, Grong Hemmer H. Materials Science & Engineering: A,2010,527(6),1351. 16 Iwahashi Y, Horita Z, Nemoto M, et al. Acta Materialia,1997,45(11),4733. 17 Hu J, Lin D L, Wang Y. Acta Metallurgica Sinica,2009,45(6),652(in Chinese). 胡静,林栋梁,王燕,等.金属学报,2009,45(6),652. 18 Wu S D, An X H, Han W Z, et al. Acta Metallurgica Sinica,2010,46(3),257(in Chinese). 吴世丁,安祥海,韩卫忠,等.金属学报,2010,46(3),257. 19 Guo T B, Li Q, Wang C, et al. Acta Metallurgica Sinica,2017,53(8),97(in Chinese). 郭廷彪,李琦,王晨,等.金属学报,2017,53(8),97. 20 Zhang Y T, Fu P H, Zhang M. Hot Working Technology,2008,37(5),127(in Chinese). 张御天,付彭怀,张满.热加工工艺,2008,37(5),127. 21 Lu L, Chen X, Huang X, et al. Science,2009,323(5914),607. 22 Jia S W, Zhang Z, Wang W. Materials Review A: Review Papers,2015,29(12),114(in Chinese). 贾少伟,张郑,王文,等.材料导报:综述篇,2015,29(12),114.