Abstract：The in-situ dynamical observation of martensitic transformation in low carbon steel was carried out by high temperature confocal laser scanning microscopy (CLSM). It was found that lath martensite was formed in experimental low carbon steel in continuous cooling process as the temperature reached about 373 ℃ (Ms). And the transformation stopped at about 300 ℃ (Mf). The lath martensite was mainly nucleated in annealing twin boundaries and austenitic boundaries & corners, or nucleated in previously formed laths and then developed to austenitic crystal at 60° or 120°. Furthermore, there were two types for the formation of lath bundle: one was parallel lath bundle which was gradually formed based on the previously formed laths; the other was laths which finally formed geometrical shapes such as regular triangle and parallelogram after being triggered by the previously-formed laths.
班丽丽，温娟，史学星，刘卫平. 低碳钢在高温共焦激光扫描显微镜下马氏体相变的原位观察研究[J]. 冶金分析, 2011, 31(12): 1-5.
BAN Li-li, WEN Juan, SHI Xue-xing, LIU Wei-ping. Study on in-situ observation of martensitic transformation in low carbon steel by high temperature confocal aser scanning microscopy. , 2011, 31(12): 1-5.
