Enthalpies of formation for the Al-Cu-Ni-Zr quaternary alloys calculated via a combined approach of geometric model and Miedema theory

被引：36
|
作者：
Ouyang, Yifang [1 ]
Zhong, Xiaping
Du, Yong
Feng, Yuanping
He, Yuehui
机构：
[1] Guangxi Univ, Dept Phys, Nanning 530004, Peoples R China
[2] Cent S Univ, State Key Lab Powder Met, Changsha 410083, Peoples R China
[3] Natl Univ Singapore, Dept Phys, Singapore 119260, Singapore
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2006年 / 420卷 / 1-2期
基金：
中国国家自然科学基金;
关键词：
ternary alloy; quaternary alloy; mixing enthalpy; geometric model; Miedema's theory;
D O I：
10.1016/j.jallcom.2005.10.047
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：
A method to extrapolate the thermodynamic properties of quaternary alloys from constitutive binary systems is presented. The method is based on Nbedema's theory, and the asymmetry of thermodynamic properties of constitutive binary alloys is considered in the present model. The dependence of asymmetric constituent on the choice in Toop model has been overcome. This method has been applied to calculate the enthalpies of formation for ternary alloys. In the present work, the proposed method is used to calculate the mixing enthalpies of Al-Cu-Ni-Zr quaternary alloys and its constitutive subsystems. The good agreement between calculation and experimental data indicates that the present method is reasonable for predicting the thermodynamic properties of multi-component system. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码：175 / 181
页数：7
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