Decomposition of Austenite Under Conditions of Competition of Martensitic and Bainitic Transformations

详细

Low-carbon martensitic steels (LCMS) 15Kh2G2NMFB and 27Kh2G2NMFB are studied after an isothermal hold at 360°C and 340°C, respectively, with subsequent continuous cooling in air. The temperature and ranges of the dominant shear and diffusion mechanisms of the γ → α transformations are determined by computation. The principal differences in the morphology and the sizes of laths and packets of low-carbon martensite and upper bainite are determined.