Advanced high-strength steels

Abstract

This chapter is concerned with the advanced high-strength steels (AHSS). The focus is on AHSS of second generation—the high-alloy austenitic steels with twinning-induced plasticity (TWIP) and transformation-induced plasticity (TRIP). For both groups, the state-of-the-art knowledge regarding the thermodynamic aspects, the deformation behaviour and the modelling of the deformation and strain-hardening behaviour is provided. The deformation behaviour is discussed with respect to the influence of different parameters such as temperature, strain rate and grain size as well as the appearance of strain localizations.