采用微观相场方法,以Ni68.2Al22.7V9.1合金为例研究了应变能对两相沉淀及原子占位的影响.研究结果显示:沉淀过程中应变能明显使Ll2沉淀相增加,对DO22相的沉淀有一定的抑制作用；由于DO22相减少,V原子在Ll2相中各个位置的占位几率增大,而且应变能越大占位几率越高;应变能对Al原子在Ll2相中的α1位的占位儿率影响不大,只有小幅度的降低,但明显降低了Al原子在α2位和β位的占位几率；各种情况下V原子在L12相β位的占位几率始终高于α位.
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