A review on ultrasonic spot welding of copper alloys |
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| Authors: | Z L Ni J J Yang S Li X X Wang F X Ye |
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| Affiliation: | 1. School of Materials Science and Engineering, North China University of Water Resources and Electric Power, Zhengzhou, People’s Republic of China;2. School of Materials Science &3. Engineering, Tianjin University, Tianjin, People’s Republic of Chinazlni@tju.edu.cn;5. School of Mechanical Engineering, North China University of Water Resources and Electric Power, Zhengzhou, People’s Republic of China;6. School of Materials Science &7. Engineering, Tianjin University, Tianjin, People’s Republic of China |
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| Abstract: | As a solid state joining process, ultrasonic spot welding has been proven to be a promising technique for joining copper alloys. However, challenges still remain in employing ultrasonic spot welding to join copper alloys. This article comprehensively reviews the current state of ultrasonic spot welding of copper alloys with a number of critical issues including materials flow, plastic deformation, temperature distribution, vibration, relative motion, vertical displacement, interface friction coefficient, online monitoring technique, coupled with the macrostructure and microstructure, the mechanical properties and electrical conductivity. In addition, the future trends in this field are provided. |
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| Keywords: | Ultrasonic spot welding Cu/Cu joints process characteristic mechanical and electrical properties online monitoring technique microstructure macrostructure electrical conductivity |
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