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利用余瑞璜的“固体与分子经验电子理论“对40 CrNiMo奥氏体结构进行了键距差(BLD)分析,依据原子杂化状态、原子磁距、实验键距等已知资料建立了40 CrNiMo奥氏体的价电子结构;用固溶体微观不均匀性理论进行推理揭示了C-Cr,C-Ni,C-Mo在奥氏体中的短程偏聚。用电子显微分析及能谱分析证实了C-Cr,C-Ni,C-Mo偏聚对相变产物的影响。据此,40 CrNiMo等温转变动力学曲线的形成便追溯到合金相的价电子结构。
Based on the “electronic theory of solid and molecular experience” by Yu Ruihuang, the bonding distance difference (BLD) analysis of 40 CrNiMo austenite structure was performed. According to the known data of the atomic hybrid state, atomic magnetic distance, experimental bond distance and other known data, 40 CrNiMo The valence electron structure of martensite was deduced by using the theory of microscopic heterogeneity of solid solution to reveal the short-range segregation of C-Cr, C-Ni and C-Mo in austenite. The effects of C-Cr, C-Ni and C-Mo segregation on the phase change products were confirmed by electron microscopy and energy spectrum analysis. Accordingly, the formation of 40 CrNiMo isothermal transformation kinetics traces back to the valence electron structure of the alloy phase.