Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

您目前所在的位置:首页 - 期刊简介 - 详细页面

中国有色金属学报

ZHONGGUO YOUSEJINSHU XUEBAO

第21卷    第4期    总第145期    2011年4月

[PDF全文下载]        

    

文章编号:1004-0609(2011)04-0865-10
RE-X二元合金相图的热力学数据库
刘兴军1,张红玲1,王书亮1,王翠萍1,潘复生2,汤爱涛2,赵栋梁3

(1. 厦门大学 材料学院,厦门 361005;
2. 重庆大学 材料科学与工程学院,重庆 400045;
3. 北京钢铁研究总院,北京 100081
)

摘 要: 利用CALPHAD方法,采用亚正规溶体模型、亚点阵模型以及理想气体模型来描述RE-X (Ag, Bi, Cr, Mn, Mo, V, Zn)中二元系各相的Gibbs自由能,并结合相平衡及热力学性质的实验结果,对Ag-RE (RE: Sc, Y, Nd, Sm, Gd, Tb, Ho, Er)、Bi-RE (RE: Nd, Tm, Er, Ho, Pr, Gd)、Cr-RE (RE: Ce, Nd, Sm, Lu)、Mn-RE (RE: Pr, Nd, Sm, Eu, Tb, Dy, Ho, Er, Tm, Yb, Lu)、Mo-RE (RE: Sc, Y, La, Ce, Pr, Nd, Sm, Eu, Tb, Dy, Ho, Er, Tm, Yb, Lu)、V-RE (RE: La, Ce, Pr, Nd, Ho, Lu)和Zn-RE (RE: Y, Ce, Pr, Nd, Sm ) 各二元系相图进行热力学优化与计算。计算结果与实验数据取得很好的一致性,并结合其他相关稀土二元系相图热力学计算,初步建立部分稀土二元合金相图的热力学数据库。该热力学数据库可以提供相平衡及热力学性质等多种信息,为外推计算稀土多组元体系的相平衡提供理论基础,并为高性能稀土合金材料的设计及制备提供重要的理论指导。

 

关键字: 稀土合金;相图;热力学计算

Thermodynamic database of phase diagram in
 RE-X binary alloy systems
LIU Xing-jun1, ZHANG Hong-ling1, WANG Shu-liang1, WANG Cui-ping1, PAN Fu-sheng2,
TANG Ai-tao2, ZHAO Dong-liang3

1. College of Materials, Xiamen University, Xiamen 361005, China;
2. College of Material Science and Engineering, Chongqing University, Chongqing 400045, China;
3. Beijing General Iron and Steel Research Institute, Beijing 100081, China

Abstract:The thermodynamic assessments of phase diagrams in the Ag-RE (RE: Sc, Y, Nd, Sm, Gd, Tb, Ho, Er), Bi-RE (RE: Nd, Tm, Er, Ho, Pr, Gd), Cr-RE (RE: Ce, Nd, Sm, Lu), Mn-RE (RE: Pr, Nd, Sm, Eu, Tb, Dy, Ho, Er, Tm, Yb, Lu), Mo-RE (RE: Sc, Y, La, Ce, Pr, Nd, Sm, Eu, Tb, Dy, Ho, Er, Tm, Yb, Lu), V-RE (RE: La, Ce, Pr, Nd, Ho, Lu) and Zn-RE (RE: Y, Ce, Pr, Nd, Sm) binary alloy systems were carried out by using calculation of phase diagrams (CALPHAD) method on the basis of the experimental data including thermodynamic properties and phase equilibria. The Gibbs free energies of the solution phases were described by the subregular solution model with Redlich–Kister equation, and those of the intermetallic compounds and gas phase were, respectively, described by sublattice model and ideal gas model. A consistent set of thermodynamic parameters were derived to describe the Gibbs free energies of each solution phase and intermetallic compound. The calculated phase diagrams and thermodynamic properties are in good agreement with the experimental data. The primary thermodynamic database of rare earth alloys is developed, which will provide important information including phase diagrams and various thermodynamic properties for development of rare earth alloy materials.

 

Key words: rare earth alloys; phase diagrams; thermodynamic modeling

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

主管:中国科学技术协会 主办:中国有色金属学会 承办:中南大学
湘ICP备09001153号 版权所有:《中国有色金属学报》编辑部
------------------------------------------------------------------------------------------
地 址:湖南省长沙市岳麓山中南大学内 邮编:410083
电 话:0731-88876765,88877197,88830410   传真:0731-88877197   电子邮箱:f_ysxb@163.com