Modeling of Dynamic Recrystallization Behavior of As-Extruded AM50 Magnesium Alloy during Hot Compression by a Cellular Automaton Method

被引：8
|
作者：
Shu, Dayu [1 ]
Wang, Jing [2 ]
Jiang, Menghao [2 ]
Chen, Gang [2 ]
Lu, Liwei [3 ]
Zhang, Hongming [4 ]
机构：
[1] Southwest Technol & Engn Res Inst, Chongqing 400039, Peoples R China
[2] Harbin Inst Technol, Sch Mat Sci & Engn, Weihai 264209, Peoples R China
[3] Hunan Univ Sci & Technol, Sch Mat Sci & Engn, Xiangtan 411201, Peoples R China
[4] Harbin Inst Technol, Sch Ocean Engn, Weihai 264209, Peoples R China
来源：
METALS | 2021年 / 11卷 / 01期
基金：
中国国家自然科学基金;
关键词：
AM50 magnesium alloy; hot compression; dynamic recrystallization; microstructure evolution; cellular automaton;
D O I：
10.3390/met11010075
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The dynamic recrystallization (DRX) behavior of as-extruded AM50 magnesium alloy was modelled and simulated by a cellular automaton (CA) method. Isothermal compression experiments were conducted, and the characteristic parameters in the CA model were obtained by the testing stress-strain flow curves in a wide temperature range of 250-450 degrees C and strain rate range of 0.001-10 s(-1). The flow stress, DRX volume fraction and DRX grain size of the as-extruded AM50 magnesium alloy were predicted by CA simulation. The results showed that the DRX behavior of the studied magnesium alloy was susceptive with the temperature and strain rate; meanwhile, the prediction results were approximate to the experimental values, indicating that the developed CA model can make a confident estimation on the DRX behavior of the as-extruded AM50 magnesium alloy in high temperature conditions.
引用
收藏
页码：1 / 13
页数：13
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