本文作者利用X射线衍射及电子显微技术对不同热处理工艺的奥氏体——贝氏体球铁的显微组织进行了定性及定量分析,并在此基础上着重讨论了球铁等温淬火的转变过程,在本文中论述了奥氏体化温度、时间,等温温度、时间对残余奥氏体含量、合碳量、硬度HV值以及贝氏体形态的影响,还讨论了残余奥氏体含量与含碳量之间的关系。 The author uses X-ray diffraction and electron microscopy to qualitatively and quantitatively analyze the microstructures of austenite-bainitic ductile iron with different heat treatment processes. On the basis of this, the author focuses on the isothermal quenching of ductile iron In this paper, the effects of austenitizing temperature, time, isothermal temperature and time on retained austenite content, carbon content, HV value and bainite morphology were discussed. The content of retained austenite And the relationship between carbon content.