The expansion behavior caused by deformation-induced martensite to austenite transformation in heavily cold-rolled metastable austenitic stainless steel

Abstract Usually, the martensite-to-austenite transformation in steels results in volumetric contractions. However, we observed that the martensite-to-austenite transformation induced expansion in rolling direction of heavily cold-rolled metastable austenitic stainless steel during heating. Herein, we provide a mechanistic insight into the anomalous dilatometric behavior.