Plastic Stability of Retained Austenite in the Cold-rolled 0.14%C-1.9%Si-1.7%Mn Sheet Steel

摘要: Mechanical properties of a 0.14%C-1.9%Si-1.7%Mn TRIP steel have been studied especially from the aspect plastic stability retained austenite which was varied by changing bainite transformation time at 400°C. The and strength-ductility balance room temperature are improved with increase in C content after opimizing continuous annealing process. Martensitic can occur plastically unstable low content. kinetics model for deformation-induced martensitic explains experimentally obtained change volume fraction strain terms austenite.