Analysis of the Glass-Forming Ability of Fe-Er Alloys, Based on Thermodynamic Modeling

被引：1
|
作者：
Arutyunyan, N. A. [1 ]
Zaitsev, A. I. [1 ,2 ]
Dunaev, S. F. [1 ]
Kalmykov, K. B. [1 ]
El'nyakov, D. D. [1 ]
Shaposhnikov, N. G. [2 ]
机构：
[1] Moscow MV Lomonosov State Univ, Dept Chem, Moscow 119991, Russia
[2] Bardin Cent Res Inst Ferrous Met, Moscow 107005, Russia
来源：
RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A | 2018年 / 92卷 / 05期
基金：
俄罗斯基础研究基金会;
关键词：
amorphous alloys; glass-forming ability; thermodynamic modeling; associated solutions; phase diagram; MAGNETIC-PROPERTIES;
D O I：
10.1134/S0036024418050035
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 Fe-Er phase diagram and thermodynamic properties of all its phases are assessed by means of self-consistent analysis. To refine the data on phase equilibria in the Fe-Er system, an investigation is performed in the 10-40 at % range of Er concentrations. The temperature-concentration dependences of the thermodynamic properties of a melt are presented using the model of ideal associated solutions. Thermodynamic parameters of each phase are obtained, and the calculated results are in agreement with available experimental data. The correlation between the thermodynamic properties of liquid Fe-Er alloys and their tendency toward amorphization are studied. It is shown that compositions of amorphous alloys prepared by melt quenching coincide with the ranges of concentration with the predominance of Fe3Er and FeEr2 associative groups that have large negative entropies of formation.
引用
收藏
页码：829 / 835
页数：7
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