采用微观相场方法,以Ni75Al15V10合金为例研究了应变能对预析出相的影响.研究发现:合金沉淀早期的应变能影响预析出相L10的析出.无应变能作用时,体系中没有预析出相L10相出现:应变能越大,L10预析出相的孕育期越短,析出量增加,稳定存在时间越长,且体系所析出的L10相的结构特征越明显.应变能较小时,无序基体有些区域先析出L10相,随后所析出的L10相转变为L12相,而在有些区域却直接析出LI2相;当应变能较大时,基体大范围先析出L10相,随后部分L10预析出相溶解,只有未溶解部分最终能转变为L12相.
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