Abstract
The systematic study of equiatomic FeAlCrMo and FeAlCrV medium-entropy alloys in compression revealed their mechanical properties which are supreme to conventional alloys. On the other hand, these alloys exhibit unusual serrated flow observed around 400 °C and a strain rate of 10-4 s-1. This contribution presents a study of deformation behavior of an equiatomic FeAlCrNi - a novel medium-entropy alloy - in comparison with the alloys mentioned above.
FeAlCrNi is a notable alloy exhibiting a specific microstructure composed of the BCC and B2 phases. Owing to the high content of passivating elements, Al and Cr, and the absence of Mo or V, it also possesses excellent resistance to high temperature oxidation at 800 °C essentially by forming a protective Al2O3 scale.