Welding in the World

, Volume 63, Issue 1, pp 127–136 | Cite as

Effect of welding speed on microstructures and mechanical properties of Al/Cu bimetal composite tubes by a novel friction-based welding process

  • Xiawei Yang
  • Wenya LiEmail author
  • Yaxin Xu
  • Quan Wen
  • Wuyuan Feng
  • Yansong Wang
Research Paper


In this work, a novel friction-based welding technology was developed to weld Al/Cu bimetallic tubes. The macrostructure, microstructure evolutions, and mechanical properties of the joint under different welding speeds were investigated. Void defects are observed on the joint interface, especially at the welding speed 60 mm/min. From the Al side to the Cu side, the reaction layer can be divided into five layers. In addition, welding speed has an important influence on the microstructure evolution of reaction layer. Compression-shear testing results show that the shear strength decreases with the increase of the welding speed. The failure of compression-shear samples is first generated at the junction of hypereutectic layer and intermetallic compound (IMC) layer, and then, the crack propagates along the interface of the hypereutectic layer and IMC layer or through the hypereutectic layer to the eutectic layer.


Friction-based welding Al/Cu bimetallic tubes Microstructure evolutions Mechanical properties 


Funding information

This study was financially supported by the National Natural Science Foundation of China (No. 51875470). The project was supported by the Fundamental Research Funds for the Central Universities (No. 3102017ZY005), the Natural Science Foundation of Shaanxi Province (No. 2018JM5159), and the National Key Research and Development Program of China (2016YFB1100104).


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Copyright information

© International Institute of Welding 2018

Authors and Affiliations

  • Xiawei Yang
    • 1
  • Wenya Li
    • 1
    Email author
  • Yaxin Xu
    • 1
  • Quan Wen
    • 1
  • Wuyuan Feng
    • 1
  • Yansong Wang
    • 1
  1. 1.State Key Laboratory of Solidification Processing, Shaanxi Key Laboratory of Friction Welding TechnologiesNorthwestern Polytechnical UniversityXi’anPeople’s Republic of China

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