OALib Journal期刊
铁基合金中热驱动和应力驱动的马氏体形核动力学
, PP. 1153-1158
Keywords: 马氏体相变 ,形核 ,动力学
Abstract:
根据马氏体相变的经典形核理论,对铁基合金中马氏体形核激活能进行了重新估算结果表明在非低温时形核激活能比热能低一个数量级,从而证实了铁基合金中马氏体相变的热致形核深入研究了马氏体形核的动力学,确定了马氏体形核激活能-界面能、激活能-相变驱动力以及相变驱动力-激活体积的关系,这些关系与相关的实验研究结果相一致.在此基础上,探讨了热能和应力在马氏体形核中的驱动作用,提出了马氏体相变的形核机制.高温条件下的形核由热驱动来完成,而在低温时应力驱动起重要作用.
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