Thermodynamic assessment of the Mg-Pr system

被引:18
作者
Guo, CP [1 ]
Du, ZM [1 ]
机构
[1] Univ Sci & Technol Beijing, Dept Mat Sci & Engn, Beijing 100083, Peoples R China
基金
中国国家自然科学基金;
关键词
Mg-Pr phase diagram; Mg alloys; thermodynamic assessment; CALPHAD technique;
D O I
10.1016/j.jallcom.2005.03.033
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The Mg-Pr system was critically assessed by means of the Calculate of Phase Diagram (CALPHAD) technique. The solution phases (liquid, body-centered cubic, double hexagonal close-packed and hexagonal close-packed) were modeled with the Redlich-Kister equation. The intermetallic compounds, Mg12Pr and Mg2Pr, were treated as stoichiometric compounds. The compounds Mg41Pr5, Mg3Pr and MgPr, which have a homogeneity range, were treated as the formulae (Mg, Pr)(41) (Mg, Pr)(5), Mg(Mg, Pr)(3) and (Mg, Pr)(Mg, Pr) by a two-sublattice model with Mg and Pr or Mg on the first sublattice, and Mg and Pr on the second one, respectively. A set of self-consistent thermodynamic parameters of the Mg-Pr system was obtained. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码:183 / 188
页数:6
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