Modelling of dynamic recrystallisation kinetics in austenitic stainless and hypereutectoid steels
Modelling of dynamic recrystallisation kinetics in austenitic stainless and hypereutectoid steels
复制标题
DOI：
10.1179/026708306x81478
复制
发表时间：
2006-05
影响因子：
1.8
通讯作者：
G. Stewart;A. Elwazri;S. Yue;J. Jonas
中科院分区：
文献类型：
--
作者：
G. Stewart;A. Elwazri;S. Yue;J. Jonas
动态再结晶的两个重要参数可以从应变硬化速率的变化中得出：动态再结晶起始的临界应变和最大软化点。在目前的工作中，这些值是根据 900-1100°C 范围内的压缩测试获得的应力-应变数据确定的。由此产生的应变用于推导两种材料的动态再结晶动力学模型：304 奥氏体不锈钢和过共析普通碳钢。借助再结晶微观结构的金相分析来确认用于定义所提出的模型的机械参数的值。
Two important parameters for dynamic recrystallisation can be derived from changes in the strain hardening rate: the critical strain for initiation of dynamic recrystallisation and the point of maximum softening. In the present work, these values are determined from stress–strain data obtained by compression testing over the range of 900–1100°C. The resulting strains are used to derive a kinetic model of dynamic recrystallisation for two materials: 304 austenitic stainless steel and a hypereutectoid plain carbon steel. The values of the mechanical parameters used to define the proposed model are confirmed with the aid of metallographic analysis of the recrystallised microstructures.