Features of Electroplastic Effect in Alloys with Martensite Transformation

Abstract

Influence of different electric current modes (pulse and direct) on occurrence of the electroplastic effect under uniaxial tension in the coarse-grained alloys with martensite transformations is investigated. The materials are shape memory Ti49.3Ni50.7 alloy and metastable austenite transformation-induced plasticity (TRIP) steel. The paper contains experimental results of current impact on the “stress–strain” curves of the material. It has been taken an experimental measurement of the sample temperature during the test. It is shown that the shape of a stress–strain curves and type of the serrate plastic flow, connected with the martensitic transformation and electroplastic effect, depend on the current modes. Impact of pulse current and direct current suppresses shape memory and TRIP effect.