Deformation-induced martensitic transformation behavior at cryogenic temperatures in an austenitic stainless steel studied by in situ neutron diffraction experiments

Abstract

In situ neutron diffraction experiments during tensile deformation were conducted by using an austenitic stainless steel to investigate the deformation-induced martensitic transformation (DIMT) behavior at cryogenic temperatures. The strength increased, and elongation decreased with a decrease in the deformation temperature. The reduction of area decreased significantly when the temperature decreased from 77 to 20 K. The effect of temperature on the DIMT behavior became smaller with decreasing temperature, and no significant change in the DIMT kinetics was observed at 20 and 77 K.