Martensitic Transformation Under Loading and the Mechanical Properties of Iron Alloys

Abstract. The ma~tensitic transfol-niation (MT) under tensile dcfol.m:ltion at 77K i n a series of Fe-Ni-Mn alloys was studied. The anlotult of ~na~tensite fos~ned d ~ ~ r i ~ l g the tensile test depends on the applied stress and on the Mn content which determines the mnrtensitic point and the MT start stress. Elongation of the tensile tested samples has a maximum value in the alloys co~ltainilig the 50% anlount of maltensite fosn~ed during the tensile test. Paramete~r; which determine the inte~~sity of the MT and plasticity of the samples under loading are discussed. 1.