奥氏体向马氏体转变时位向关系的价电子理论研究

Study on Valence Electron Theory of Phase Relationship in A/M Transformation

按程氏理论中关于“原子边界条件”的设想,根据晶面平均共价电子密度(简称电子密度)的计算方法,运用余氏理论对奥氏体和马氏体原子排列较密集晶面的电子密度进行分析和计算。通过对计算结果的分析确定奥氏体向马氏体转变时的位向关系,结果发现奥氏体的(111)晶面和马氏体的(110)晶面的电子密度在一级近似下连续。

Based on the assumption about the atomic boundary conditions and the calculation method of covalent election average density on the crystal face, the electron density of those crystal faces on which atoms arrange more intensively is analyzed and calculated by employing EET（empirical electron theory）. Through the analysis of the results, the phase relationship in A/M transformation is determined. It reveals that （111）γ//（110）α.