铜合金固溶强化的电子理论解释

Explanation based on electron theory for solid solution strengthening in copper alloy

基于固体与分子经验电子理论(EET),建立Cu-Cr合金的相空间价电子结构计算模型和方法,计算不同Cr含量的铜合金中各个结构单元的相空间价电子结构,从相空间价电子结构角度探讨合金元素的合金化行为,从电子结构层次探讨合金元素对基体所产生的固溶强化效应;提出与铜合金的固溶强化相关的价电子结构参数—固溶强化综合判定因子,并对不同合金的判定因子进行计算。结果表明,提出的固溶强化综合判定因子能够解释合金元素对基体的固溶强化效果,且与实验结果相符。

Based on the empirical electron theory in solids and molecules, the calculation models and methods of valence electron structure of the phase in Cu-Cr alloy were established. The valence electron structures of phase were calculated, and the alloying behavior of alloying elements and the solid solution strengthening behavior were explored from the valence electron structures of phase. The concept and calculation methods of solid solution strengthening factors were advanced. The results show that the solid solution strengthening factors can express the solid solution strengthening of alloying elements to matrix, which accords with the experiment.