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)·1/2[001]和(100)//(200)·1/2[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)·1/2[001]和(100)//(200)·1/2[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.
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