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金属学报  2006 

固体中的扩散应力研究

, PP. 225-233

Keywords: 扩散偶,互扩散生长,周期层片型结构,扩散应

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Abstract:

固体中原子的互扩散行为导致的应力应变现象越来越受到人们的重视。这种扩散应力不仅可以引起材料的宏观变形,而且可能使材料内部形成特殊的微观组织。本论文系统地阐述了固体中原子扩散与应力之间的相互作用问题,区别了应力扩散与扩散应力的概念,并通过流点体积生长率的推导,建立了互扩散区域内流点应力应变与原子扩散流之间的变量关系,提出描述固态互扩散区域内扩散应力与应变的一般理论。在此基础上,作者分析了固态反应周期层片型结构的形成机理和薄片扩散偶的扩散弯曲问题,并提供相应的理论解释。

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