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本文用经验电子论的键距差分析法计算了Fe-Cr“σ”相的价电子结构,结果表明σ相中存在原子间共价电子数的明显不均匀性.可以认定,这种不均匀性是σ相脆性的原因之一.
In this paper, we calculated the valence electron structure of the Fe-Cr “σ” phase using the empirical electron theory of bond distance difference analysis. The results show that there is obvious inhomogeneity of the number of covalent electrons between atoms in σ phase. Sex is one of the causes of σ-phase friability.