Constitutive Equation of As-cast AZ31B Magnesium Alloy Based on Dynamic Recrystallization

Home > Archive>Volume 47, Issue 1, 2018 >124-130

Constitutive Equation of As-cast AZ31B Magnesium Alloy Based on Dynamic Recrystallization
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Affiliation:Heavy Machinery Eng Research Center of Ministry of Education,Taiyuan University of Science and Technology Taiyuan,Heavy Machinery Eng Research Center of Ministry of Education,Taiyuan University of Science and Technology Taiyuan,Heavy Machinery Eng Research Center of Ministry of Education,Taiyuan University of Science and Technology Taiyuan,Heavy Machinery Eng Research Center of Ministry of Education,Taiyuan University of Science and Technology Taiyuan,Heavy Machinery Eng Research Center of Ministry of Education,Taiyuan University of Science and Technology Taiyuan,Heavy Machinery Eng Research Center of Ministry of Education,Taiyuan University of Science and Technology Taiyuan
Clc Number:TG146.22
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Abstract:

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.

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[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.]
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Received:November 04,2016
Revised:January 05,2017
Adopted:February 21,2017
Online: February 07,2018
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