Thermodynamic analysis of processability of Mg-Al-Zn-Mn alloys for rheocasting

被引：5
|
作者：
Guo, H. -M. [1 ,2 ]
Wen, F. -M. [1 ]
Yang, X. -J. [2 ]
Jin, H. -L. [1 ]
Zhang, A. -S. [1 ]
机构：
[1] Nanchang Univ, Sch Mat Sci & Engn, 999 Xuefu Rd, Nanchang 330031, Peoples R China
[2] Nanchang Univ, Key Lab Near Net Forming Jiangxi Prov, Nanchang 330031, Peoples R China
来源：
MATERIALS SCIENCE AND TECHNOLOGY | 2015年 / 31卷 / 15期
基金：
中国国家自然科学基金;
关键词：
Magnesium alloys; Rheocasting; Thermodynamic calculation; Alloy design; Microstructure; AZ91D MAGNESIUM ALLOY; MECHANICAL-PROPERTIES; MICROSTRUCTURE EVOLUTION; ANGULAR OSCILLATION; ALUMINUM-ALLOY; SOLIDIFICATION; SIMULATION;
D O I：
10.1179/1743284715Y.0000000044
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A two-stage thermodynamic calculation procedure was developed to analyse alloy compositions for rheocasting. Based on Kazakov's criteria, the processability of AZ91, AZ61 and AM60B for rheocasting was investigated. The results show that these alloys do not satisfy selected criteria fully, and only AZ91 is possible to be used for rheocasting with semisolid slurry having lower fraction solid (0.2-0.4). In microstructure produced by rheocasting, the beta-Mg17Al12 phase forms continuous network along primary alpha-Mg gain boundary and is concentrated in this limited contiguous space. The routes to modify and optimise alloy composition were proposed.
引用
收藏
页码：1903 / 1909
页数：7
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