根据马氏体相变的经典形核理论,重新估算了铁基合金中马氏体均匀形核激活能,研究了激活能与界面能和相变驱动力的关系.结果表明,热激活形核具有很低的形核激活能;热激活能形核动力学与马氏体形核动力学实验研究结果一致.在动力学研究的基础上,提出了马氏体相变的形核机制.在该形核机制中,除了热激活形核,还考虑了应力对马氏体形核的作用, 特别是在低温时由于急冷导致的内应力对形核的贡献.
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