楚志兵,张铎,马立峰,江连运,杨小容,黄庆学.基于动态再结晶的铸态AZ31B镁合金本构方程[J].稀有金属材料与工程,2018,47(1):124~130.[Chu Zhibing,Zhang Duo,Ma Lifeng,Jiang Lianyun,Yang Xiaorong,Huang Qingxue.Constitutive Equation of As-cast AZ31B Magnesium Alloy Based on Dynamic Recrystallization[J].Rare Metal Materials and Engineering,2018,47(1):124~130.]
基于动态再结晶的铸态AZ31B镁合金本构方程
投稿时间:2016-11-04  修订日期:2017-01-05
中文关键词:  铸态AZ31B  位错理论  本构模型  动态再结晶百分数
基金项目:国家自然科学基金资助项目(51375325);山西省青年科技基金资助项目(2015021111);专利推广实施资助专项(20161006);山西省研究生教育创新项目(2016SY055);校博士科研启动项目(20122017)
中文摘要:
      通过GLEEBLE压缩实验获得铸态AZ31B镁合金真应力应变曲线,本文从真应力应变曲线出发,通过数值分析获得临界应力应变模型、饱和应力模型和稳态应力模型等多种应力模型。同时,结合位错理论和动态再结晶动力学,根据镁合金在变形过程中发生动态在结晶的临界点,将应力应变曲线分为两段,分别对以动态回复为主的曲线和以动态再结晶为主的曲线建立本构模型,分析并得出了动态再结晶百分数与基于动态再结晶下的流变应力之间变化规律。
Constitutive Equation of As-cast AZ31B Magnesium Alloy Based on Dynamic Recrystallization
英文关键词:as-cast AZ31B  critical stress model  constitutive model dynamic recrystallization
英文摘要:
      The true stress-strain curves of as-cast AZ31B magnesium under different temperature and strain rate can be obtained from GLEEBLE compression experiment. Critical strain model, saturated stress model and static stress model can be received by analyzing true stress-strain curves. Based on the classical dislocation density theory and the dynamic recrystallization (DRX) kinetics models, a two-stage constitutive model considering the effect of work hardening-dynamic recovery and DRX is developed for the as-cast AZ31B magnesium alloy. And the relation between the percentage of DRX and flow stress is obtained.
作者单位E-mail
楚志兵 太原科技大学 1914009646@qq.com 
张铎 太原科技大学 1914009646@qq.com 
马立峰 太原科技大学  
江连运 太原科技大学  
杨小容 太原科技大学  
黄庆学 太原科技大学  
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