康沫狂,朱明

• 1:西北工业大学材料学院
• 2:西北工业大学材料学院 陕西西安710072
• 3:陕西西安710072

摘要(Abstract)：

在试验用钢和β铜基合金固溶后等温或时效时,贝氏体孕育期是母相中溶质原子向晶体缺陷处和〈001〉晶向上扩散偏聚(形成贫、富溶质原子小区)的过程,即渐变(量变)阶段,为贝氏体形核做准备。当贫溶质小区贫化到以等温或时效温度作为Ms点的成分时,该小区即能进行马氏体样贝氏体切变形核,为突变(质变)阶段。孕育期也是一个受溶质原子扩散控制的过程。贝氏体形核是由过饱和的贝氏体和原始母相间溶质原子浓度差而产生的驱动力驱动。初期贝氏体有马氏体性质,是过饱和的。

关键词(KeyWords)： 贝氏体;孕育期;切变形核;相变基元;类Spinodal分解

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 康沫狂,朱明

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