Microstructural factors describing the plastic deformation of TRIP/TWIP steels(S042_2)

摘要

We have reported that the dominant deformation modes of two kinds of TRIP/TWIP steels, Fe-30Mn-4Si-2Al (hereinafter, Al2) and Fe-30Mn-3Si-3Al (Al3) at strains smaller than 10% is the stress-induced γ → ε martensitic transformation for the former, and theplanar/wavy dislocations and deformation twin for the latter [1]. In this article, we present deformation microstructures inside grains andat random / twin boundaries, to classify microstructural factors describing plastic deformation of TRIP /TWIP steels in terms of theireffect on work hardening.