2.25Cr1Mo钢动态再结晶物理冶金模型的研究

Physical metallurgical model for dynamic recrystallization of 2. 25Cr1Mo steel

??The hot compression tests of 2. 25Cr1Mo steel at 950-1200??, 0. 01-10s-1, and deformation of 60% were carried out on a Gleeble- 1500D simulator. The effects of deformation temperature and strain rate on the dynamic recrystallization of 2. 25Cr1Mo steel were investigated. The models for dynamic recrystallization critical strains and dynamic recrystallization fraction were established. The results show that 2. 25Cr1Mo steel is more likely to undergo dynamic recrystallization at high temperature and high strain rate. The deformation activation energy and critical strains in dynamic recrystallization as well as dynamic recrystallization fraction model of 2. 25Cr1Mo steel were obtained. The constitutive equation of 2. 25Cr1Mo steel was constructed and the dynamic recrystallization physical metallurgical model of finite element software data interface was established. The model provides the basic conditions for the forging microscopic simulation of large forgings.