中国有色金属学报(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 22 No. 12 December 2012 |
（1. Materials Science and Engineering Division, School of Engineering,
University of Sistan and Baluchestan, Zahedan, Iran;
2. Department of Materials Science and Engineering, Ferdowsi University of Mashhad, Mashhad, Iran）
Abstract:The dissimilar joining of CP-copper to 304 stainless steel was performed by gas tungsten arc welding process using different filler materials. The results indicated the formation of defect free joint by using copper filler material. But, the presence of some defects like solidification crack and lack of fusion caused decreasing tensile strength of other joints. In the optimum conditions, the tensile strength of the joint was 96% of the weaker material. Also, this joint was bent till to 180º without any macroscopic defects like separation, tearing or fracture. It was concluded that copper is a new and good candidate for gas tungsten arc welding of copper to 304 stainless steel.
Key words: gas tungsten arc welding; CP-copper; 304 stainless steel; dissimilar joint; microstructure; mechanical properties
