Homogenous and carbon graded Fe-22Mn alloys: Microstructure and mechanical properties

Among the advanced high-strength steels, high manganese steels have a superior combination of both a high UTS and a large uniform elongation. As a consequence of plastic deformation, these austenitic steels transform by creating mechanical twins (TWIP) or ε-martensite (TRIP). The deformation products depend significantly on the value of the stacking fault energy (SFE) which is in turn a function of the alloy composition. A Fe-22Mn-0.6C steel …