Towards attaining dissimilar lap joint of CuCrZr alloy and 316L stainless steel using friction stir welding |
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| Authors: | Pankaj Sahlot Saurabh S. Nene Michael Frank Rajiv S. Mishra |
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| Affiliation: | 1. Advanced Materials Processing Research Group, Materials Science and Engineering, Indian Institute of Technology Gandhinagar, Gandhinagar, India;2. Center for Friction Stir Processing, Department of Materials Science and Engineering, University of North Texas, Denton, TX, USA |
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| Abstract: | CuCrZr alloy (Cu-0.8wt-%Cr-0.1wt-%Zr) and 316L stainless steel (Fe-0.03wt-%C-16wt-%Cr-10wt-%Ni) plates were successfully friction stir lap welded resulting in significant mechanical mixing of the two matrix elements, Cu and Fe, in the stir zone. The severe mixing not only led to improved load bearing response but also leads to form Cu-rich and Fe-rich regions in the weld nugget. The formation of these phases governs the failure mechanism of the joint. Tensile properties of the weld showed promising response when compared with joints made for the similar alloy pair by other welding techniques. This suggests strong feasibility of applying FSW for joining Cu and steel for nuclear applications. |
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| Keywords: | Friction stir welding CuCrZr alloy SS 316L welding metallurgy microstructure |
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