论文部分内容阅读
1、热激活长大概述 新相形核后的长大可以热激活方式进行,也可以非热激活方式进行(如马氏体长大)。粗略地说,热激活长大是指原子由于热激活离开母相而附加到正在长大的新相上,而非激活长大,则是说新相长大时,原子的运动不需要热激活,例如在马氏体转变中,母相—马氏体的界面的迁移速度是与温度无关的,长大所需的激活能基本上为零,因此,(变温)马氏体的长大速度基本上不
1, the growth of thermal activation The growth of the new phase after the nucleation can be heat-activated manner, can also be non-thermal activation (such as martensite growth). Roughly speaking, heat activation and growth refers to the atomic heat due to leave the mother phase attached to the growing new phase, rather than activation and growth, it is said that when the new phase grows, atomic motion does not require thermal activation For example, in the martensite transformation, the migration rate of the interface between the mother phase and the martensite is temperature-independent, and the activation energy required for the growth is substantially zero. Therefore, the growth rate of the (temperature-changing) martensite Basically not