Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7176377 | Journal of Materials Processing Technology | 2018 | 17 Pages |
Abstract
Microstructure and properties of Cu/Ti laser welded joints. The optical microscopy, SEM, EDS, XRD and TEM were applied to assess the microstructure and bonding mechanism of Cu/Ti joints. When the laser beam was used to irradiate the copper side with an offset value of 0.45â¯mm, the welded metal and fusion line of Cu side were mainly consisted of the Cu solid solution. The intermetallic layer was formed at the titanium-welded metal interface. The thickness of IMCs was about 25â¯Î¼m and consisted of the Cu solid solution, intermetallic compounds such as TiCu, TiCu2, Ti2Cu and Ti3Cu4. The tensile strength of butt joints could reach 151â¯MPa, i.e. 61% of the tensile strength of the copper base metal. The quasi-cleavage fracture occurred at the IMCs.
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Authors
Yong Zhao, Weiyu Wang, Keng Yan, Chuan Liu, Jiasheng Zou,