Microstructural and mechanical properties of dissimilar friction stir welded CoCrFeMnNi high entropy alloy to STS304 stainless steel

The CoCrFeMnNi high entropy alloy was joined to STS304 stainless steel using the friction stir welding process. The cryogenic tensile properties of the joint were found to be superior compared with its tensile properties at room temperature due to the significant martensitic transformation induced plasticity at LN 2 .