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基于微观相场模型研究了应力时效对Ni75Al15V10合金中L12-Ni3Al相间反相畴界成分的影响规律。研究表明,L12相间存在3种反相畴界,其中(200)//(200)·[001]和(100)//(200)·[001]与已有文献中实验发现的L12-Ni3Fe相间反相畴界结构一致;在3种反相畴界处,Ni、Al贫化,V偏聚,应力时效使得L12相间3种反相畴界处Ni和Al的浓度升高,V浓度降低;应力时效对(200)//(200)·[001]和(100)//(200)·[001]成分的影响较大,对(200)//(200)成分的影响则相对较小;相同反相畴界处,应力时效对不同合金元素浓度的改变也不同。
Based on the microscopic phase field model, the effect of stress aging on the composition of the antiphase boundaries of L12-Ni3Al phase in Ni75Al15V10 alloy was studied. The results show that there are three kinds of antiphase boundaries between L12 phases, of which 200 (200) · [001] and (100) // (200) · [001] In the three inversion boundaries, Ni and Al are depleted and V segregates. Stress-aging makes the concentrations of Ni and Al in the three kinds of antiphase boundaries of L12 phase increase , The concentration of V decreases; the effect of stress aging on (200) // (200) · [001] and (100) // (200) · [001] 200) composition is relatively small; the same anti-domain boundaries, stress aging of different alloying element concentration changes are also different.