Effects of Cu on mechanical properties and microstructures in TRIP Steel

Abstract

In recent, transformation induced plasticity (TRIP) steels has been widely investigated to apply to light weight automibile`s body. Si is a well-known element to increase retained austenite in TRIP steels. However, the amount of Si should be controlled to improve the wettability of Zn on the steels. In general, Al has been widely used as a substitute element for Si, which deteriorated the tensile strength and elongation of TRIP steels. Therefore, it is strongly required to improve the mechanical properties of TRIP steels. In this study, the effect of Cu on the mechanical properties of TRIP steels has been investigated.