汽车用先进高强度冷轧双相钢的显微组织调控和强韧化机理

储双杰, 毛博, 胡广魁

Microstructure Control and Strengthening Mechanism of High Strength Cold Rolled Dual Phase Steels for Automobile Applications

CHU Shuangjie, MAO Bo, HU Guangkui

图3 双相钢在热加工过程中的显微组织演变过程[33~35]

Fig.3 Microstructure evolution of dual phase steels during thermo-mechanical processing (Ac1 represents the critical temperature at which pearlite transforms to austenite during heating and Ac3 represents the final critical temperature at which free ferrite is completely transformed into austenite during heating)[33-35] (F—ferrite, M—martensite, ND—normal direction, RD—rolling direction)