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金属学报  1987 

Fe-Ni-C合金马氏体相变驱动力及M_s的计算

, PP. 321-328

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Abstract:

选取了三种不同的热力学模型,(1)LFG模型;(2)徐祖耀三元系规则溶液模型;(3)本文处理方法(Fisher-徐模型加Zener参数),计算了Fe-Ni-C合金马氏体相变驱动力,求得马氏体相变驱动力与奥氏体在Ms温度的固溶强化呈线性关系△G~(a→)M=Aσ_(0.2)(Ms)+908J/mol,对不同模型选取系数A’略有差异.利用所导出的奥氏体在Ms温度时的屈服强度,计算了Fe-Ni-C合金的MS温度,计算结果与以往的实验值符合得很好。

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