Thermodynamic assessment of the Al-Ni-Gd glass-forming system

被引：16

作者：

Gao, MC

Hackenberg, RE

Shiflet, GJ ^{[1
]}

机构：

[1] Univ Virginia, Dept Mat Sci & Engn, Charlottesville, VA 22904 USA

[2] Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2003年 / 353卷 / 1-2期

基金：

美国国家科学基金会;

关键词：

Al metallic glass; thermal analysis; calphad method;

D O I：

10.1016/S0925-8388(02)01161-1

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 thermodynamics of the Al-Ni-Gd system in its Al-rich corner were assessed using the calculation of phase diagrams (CALPHAD) approach. Parameters describing the Gibbs free energy of various phases of the Al-Ni-Gd systems were manually optimized in this study. Differential thermal analysis (DTA) of 46 alloys yielded critical temperatures pertaining to the solid-liquid equilibria. Model-calculated phase equilibria and phase boundaries gave good agreement with DTA data from this study. Calculations of phase fraction vs. temperature agreed closely with the microstructure of alloys cooled after isothermal holding at intermediate temperatures. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：114 / 123

页数：10

共 26 条

[1] Thermodynamic assessment of the Al-Ni system [J].