Deformation-induced Martensite Transformation Behavior during Tensile and Compressive Deformation in Low-alloy TRIP Steel Sheets

Transformation-induced plasticity (TRIP) is a phenomenon that improves the deformability of high-strength steel. TRIP depends on deformation-induced martensite transformation behavior. To clarify mechanism in low-alloy steel, we evaluated behavior via in-plane tension and compression experiments. During tensile compressive deformation, volume fraction austenite (Vγ) decreased as strain stress increased. The rate at which Vγ during deformation was slower than deformation. However, after continuous (i.e., under vice versa), depended stress, not strain. controlled by applied regardless path stored It appropriate to apply stress-dominant strain-induced model explain this macroscopic