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利用共焦激光扫描显微镜对00Cr13Ni5Mo钢在100K/min升温速率和200K/min降温速率下的相变过程进行了原位动态研究.利用背散射电子衍射测试系统分析了冷却后室温马氏体的晶体学特征.探讨了组织遗传的产生原因.结果表明:00Cr13Ni5Mo钢以100K/min快速加热到1 250℃时,奥氏体完全恢复初始显微形貌,具有组织遗传性,且没有发生自发再结晶;该钢连续冷却过程中形成板条马氏体,马氏体相变起始温度约为273℃;冷却过程中马氏体的相变量随降温时马氏体成批次的增加而增加.
The phase transition of 00Cr13Ni5Mo steel at 100 K / min heating rate and 200 K / min cooling rate was investigated by confocal laser scanning microscopy.The room temperature martensite crystals were analyzed by backscattered electron diffraction The characteristics of tissue genetics were discussed.The results showed that the austenite completely restored the initial microstructure when 00Cr13Ni5Mo steel was rapidly heated to 1 250 ℃ at 100K / min, with histological inheritance and no spontaneous recrystallization The slab martensite was formed during continuous cooling. The initial temperature of martensite transformation was about 273 ℃. The martensitic transformation temperature increased with the increase of batch temperature of martensite during cooling.