Acta Metallurgica Sinica (English Letters) ›› 2013, Vol. 26 ›› Issue (3): 328-332.DOI: 10.1007/s40195-012-0159-4

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Interface Behavior of Copper and Steel by Plasma-MIG Hybrid Arc Welding

Tao YANG, Hongming GAO, Shenghu ZHANG, Lin WU   

  1. State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China
  • Received:2012-09-14 Revised:2013-01-10 Online:2013-06-25 Published:2013-05-06
  • Contact: Hongming GAO
  • Supported by:

    National Natural Science Foundation of China (Nos. 50974046 and 50904020), and the Twelfth Five-year Aerospace Project of China.

Abstract:

Plasma-MIG hybrid arc welding is a hybrid heating source welding method which is composed of plasma arc and MIG arc. During Plasma-MIG hybrid arc welding process, the interface behavior of copper and steel dissimilar alloy is investigated. The results show that electromagnetic stirring effect decreases and the heat input increases with the increase of outer plasma current in the hybrid arc welding process. The interface diffusion and interface thickness is controlled by the tradeoff of electromagnetic stirring effect degradation and heat input increase. The interface diffusion and interface thickness are controlled by decreasing the electromagnetic stirring force and increasing the heat input with the increase of plasma current in Cu/Fe plasma-MIG hybrid arc welding process.

Key words: Plasma-MIG hybrid arc, Copper-steel dissimilar alloy, Interface Behavior