应用耦合共格弹性畸变的微观弹性相场法研究D022型Ni3(V,Al)相沉淀过程中的应力取向效应.结果表明,在弹性内应力作用下,D022沉淀相表现出明显的位向性:相颗粒倾向于沿应力软方向[100]生长而在[001]方向受抑制,即生长方向与长轴[001]方向垂直,D022相最终沉淀形貌呈“层”状 ;沉淀过程中三类D022相变体相互协调以减小共格畸变能,最终D022-variant Ⅲ消失,存留的两类中D022-variant Ⅰ体积比占优.
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