碳对马氏体价电子结构参数及力学性能的影响

Effect of Carbon Content on Electron Structure Parameters and Mechanical Properties of Martensite

本文应用"固体与分子经验电子理论",对淬火马氏体特征相的价电子结构参数及其统计值进行计算和分析。主要计算了碳含量为0.1～0.6wt%淬火马氏体结构单元最强键共价电子对数统计值n′A、特征相及相界面原子可能存在的原子状态组数σ与σN以及界面电子密度差的统计值Δρ′,分析了碳含量变化对特征相电子结构参数的影响,最后,从电子层次探讨了碳增强马氏体的物理本质。

Statistical values of valence electron structure parameters of martensite were calculated by using empirical electron theory of solids and molecules（EET）. The statistical value of covalent electron pairs in the strongest bond, na and statistical value of the interface electron density difference, Ap＇, of the structures in martensite with carbon content from 0. 1wt% to 0.6wt% were calculated. Based on the calculating results, the effect of carbon content on the electron structure parameters of martensite was investigated and the strengthening mechanism of carbon to martenstie was discussed.