Influence of DIMT on impact toughness: relationship between crack propagation and the α′-martensite morphology in austenitic steel

The trade-off between transformation-induced plasticity (TRIP) strengthening and the intrinsically brittle nature of deformation-induced α′ -martensite (DIM) has been a long-standing dilemma in optimizing the strength-toughness synergy of austenitic steels. This has limited their potential use, particularly in energy absorption application