the dynamic behavior of three high manganese steels with very different stacking faultenergy (sfe) values (4-30 mj/m2) were studied using high strain rate torsional tests. the hotrolledmicrostructure of the steel with the lowest sfe of 4 mj/m2 consisted of a duplex mixture ofaustenite and ε-martensite, but those of the other two steels were fully austenitic. the deformedmicrostructures were stu...

Abstract Carbon is a well known austenite stabiliser and can be used to alter the stacking fault energy stability against martensitic transformation in medium Mn steels, producing range of deformation mechanisms such as Transformation Induced Plasticity (TRIP) or combined Twinning (TWIP + TRIP) effects. However, effect C beyond quasi-static tensile behaviour less known. Therefore, two steels wi...