Diffusion welding of CoCrNi medium entropy alloy (MEA) and SUS 304 stainless steel at different bonding temperatures

This research work was mainly concerned to investigate the effect of bonding temperature on the weldability of CoCrNi MEA with SUS 304 stainless steel. Shear test and nano hardness measurements were used to evaluate the mechanical performance of the welded joints. The formation of IMCs intensified along with the bond interface when samples were treated at low bonding temperature (i.e., 925 °C) which badly affected the joint’s shear strength....