Revealing the microstructural evolution and mechanism during the thermomechanical treatment of polycrystalline CrCoNi medium-entropy alloy

It is well-known that recrystallization plays an essential role in tuning the microstructure and grain size for obtaining favorable mechanical properties. However, the recrystallization behaviors are significantly affected by the deformation paths and post heat treatment parameters. In this paper, the recently developed CrCoNi medium-entropy alloy was compressed at 1000 °C with strain rates of 0.01/s, 0.1/s and 1/s, after which, all the...