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采用Nestler多相场模型,模拟了给定不同数目与形态的核心及随机形核等不同初始条件下的自由共晶生长过程,研究了自由共晶生长机制;由固相体积分数随转变时间的对数关系曲线考察了Avrami指数的变化,证实自由共晶生长过程中存在3种生长机制:扩散控制生长、层片耦合生长及调幅分解生长,并且自由共晶生长过程实际是3种生长机制相互转变的过程.

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