On the structural dependence of the stress–strain diagram parameters and fracture toughness of metastable austenitic steels

Influence of Morphology of Deformation Induced α´-Martensite on Stress-Strain Response in a Two Phase Austenitic-Martensitic-Steel

“…Various austenitic steels are in a metastable state after quenching in water from solution annealing temperature to ambient temperature and can transform into martensite via plastic deformation [1][2][3][4]. The phase transformation leads to a significant change in the stress-strain response, which depends on the morphology of the two phase austenitic-martensitic-steel [1].…”

“…The microstructure morphology includes volume fraction, distribution and strength of martensite, residual stresses and dislocation arrangement as well as dislocation density. In literature, primarily the influence of the volume fraction of martensite on the resulting stress-strain was investigated so far [2][3][4], but only few investigations are focused on a comprehensive characterization of the morphology of deformation induced martensite and resulting deformation behavior.…”