Special Features of Formation of Martensitic Phases in the Austenite of Chromium-Nickel Steels under Plastic Deformation

Resumo

Three variants of behavior of austenitic chromium-nickel steels with different degrees of austenite stability under cold compressive plastic deformation are considered. The susceptibility of the steels to formation of the first portions of ferromagnetic α′-martensite and paramagnetic ε-martensite is shown to differ depending on the composition of the steel and on the degree of the deformation. The possibility of nucleation and transformation of an intermediate paramagnetic ε-phase and ferromagnetic α′-martensite in the chromium-nickel steels with moderately unstable martensite under plastic deformation is demonstrated.