汽车用齿轮钢16MnCrS5热处理变形机理

屈小波, 安金敏, 王林, 李喜

Quenching Deformation of the 16MnCrS5 Gear Steel for Automobile

QU Xiaobo, AN Jinmin, WANG Lin, LI Xi

图2 16MnCrS5齿轮钢相变参数测定

Fig.2 Measurements of the phase-transformation parameters of 16MnCrS5 gear steel (a) time-temperature-transformation (TTT) curves (A, F, P, B, and M denote austenite, ferrite, pearlite, bainite, and martensite, respectively; Ms, Mf, Ac1, and Ac3 are martensite transformation start temperature, martensite transformation finish temperature, start temperature of transformation from pearlite to austenite during heating, and finish temperature of transformation from ferrite to austenite during heating, respectively. 1% and 99% represent the transformation variables of 1% and 99%, respectively) (b) continuous cooling transformation (CCT) curves