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建立了镍基合金特征相的计算模型,利用EET理论计算了镍基合金特征相的电子结构参数,探讨了W稳定镍基合金微观组织的物理本质。计算结果表明:合金元素W溶入镍基合金后,γ与γ’相的电子结构参数n A’和原子状态数σN都大幅增大,提高了合金原子键结合能力和相稳定性;镍基合金加入W后,γ与γ’相界面电子结构参数σ大幅提高,增强了相界面的稳定性,提高了合金组织稳定性。
The calculation model of the characteristic phase of nickel-base alloy was established. The electronic structure parameters of the characteristic phase of nickel-base alloy were calculated by EET theory and the physical nature of the microstructure of W-stabilized nickel-base alloy was discussed. The results show that both the electron structure parameters n A ’and the atomic number σN of γ and γ’ phases increase after the alloying element W dissolves into the Ni-based alloy, which improves the bondability and phase stability of the Ni-based alloy After the addition of W into the alloy, the electron structure parameter σ at the γ and γ ’interface greatly increases, which enhances the stability of the phase interface and improves the stability of the alloy.