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二次再结晶的定义是什么
更新时间: 2020-09-27 00:00:00  

在结晶完成后,正常的晶粒应是均匀的、连续的。但在某些情况下,晶粒的长大只是少数晶粒突发性地、迅速地粗化,使晶粒之间的尺寸差别越来越大。这种不正常的晶粒长大称为晶粒的反常长大。这种晶粒的不均匀长大就好像在再结晶后均匀细小的等轴晶粒中又重新发生了再结晶,所以称为二次再结晶。

关键词: 结晶 定义 什么

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