利用微观相场模型研究了有序畴界结构、合金成分和弹性应变能对Ni75A1xV25-x合金中L12-Ni3A1相间有序畴界成分的影响规律.结果表明:L12相间形成的3种有序畴界中,在(100)//(200)·1/2[001]处,Ni的贫化程度最小,A1的贫化程度最大,V的偏聚程度最大;在(200)//(200)处,Ni的贫化程度最大,A1的贫化程度最小,V的偏聚程度最小.随着合金中Al浓度的增加,3种有序畴界处Ni的浓度降低,A1的浓度升高,V的浓度降低.弹性应变能使得L12相间3种有序畴界处Ni和A1的浓度升高,V浓度降低.但弹性应变能对(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.
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