40CrNiMo钢马氏体回火组织的穆斯堡尔谱学研究

40CrNiMo钢马氏体回火组织的穆斯堡尔谱学研究 A STUDY ON TEMPERED MARTENSITE IN 40CrNiMo STEELS BY MOSSBAUER SPECTROMETRY 周孝安 1 2 3 first-author 彭刚 1 2 3 刘祥文 1 2 3 北京有色金属研究所 北京有色金属研究所 武汉地质学院 武汉地质学院 北京有色金属研究所武汉地质学院 北京有色金属研究所武汉地质学院 用穆斯堡尔谱学方法研究了40CrNiMo钢马氏体淬火及回火组织,解析了组织内各相中Fe原子的超精细作用参量及其随回火温度的变化,讨论了回火过程中合金元素的迁移和重新分布.500℃以上的高温回火样品出现的叠加在铁磁性六线谱上的顺磁性单峰与碳化物中合金元素Cr、Mo、Mn的溶解量增加有关,EDAX分析结果进一步证明了这一结论。 40CrNiMo steel in asguenched and tempered state was studied by 57 Fe Mossbauer Spectrometry. The effect of tempering temperature on hyperfine interaction parameters, transformation and distribution of alloying elements between matrix and carbides during tempering has been analysed. In samples tempered above 500℃, a new paramagnetic single peak emerged from ferromagnetic sixlets, was sugested due to the increasing amount of Cr、Mo、Mn elements desolved in Carbides. This conclusion has been further confirmed by EDAX analysis. 穆斯堡尔参量 马氏体 ε-碳化物 残余奥氏体 Mossbatter parameters Martensite ε-carbide Residual Austenite 1987-02-01 2021-04-01 2