Phase Equilibria of the Fe-Mo-Ta Ternary System

被引：2

作者：

Wang, X. M. ^{[1
,2
]}

Liu, E. L. ^{[1
,2
]}

Yin, F. C. ^{[1
,2
]}

Ouyang, X. M. ^{[1
,2
]}

Hu, J. X. ^{[1
,2
]}

Li, Z. ^{[1
,2
]}

Qiu, W. ^{[3
]}

机构：

[1] Xiangtan Univ, Sch Mat Sci & Engn, Xiangtan 411105, Hunan, Peoples R China

[2] Xiangtan Univ, Key Lab Mat Design & Preparat Technol Hunan Prov, Xiangtan 411105, Hunan, Peoples R China

[3] Changsha Univ Sci & Technol, Sch Energy & Power Engn, Changsha 410114, Hunan, Peoples R China

来源：

JOURNAL OF PHASE EQUILIBRIA AND DIFFUSION | 2019年 / 40卷 / 03期

基金：

中国国家自然科学基金;

关键词：

Fe-Mo-Ta system; isothermal section; phase relationship; solubility; LAVES PHASE; DIAGRAM; BINARY; ENTHALPY; IRON;

D O I：

10.1007/s11669-019-00738-8

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 phase equilibria of the Fe-Mo-Ta ternary system at 800 and 1000 degrees C have been experimentally investigated. The various phases in the alloys after annealing at 800 degrees C for 60days and 1000 degrees C for 45days were examined using scanning electron microscopy, energy-dispersive x-ray spectroscopy and x-ray diffraction. Two three-phase regions were confirmed at 800 degrees C and two three-phase fields at 1000 degrees C. No ternary phase was observed in any of the alloys. The experimental results indicated that the solubility of Mo in the Fe7Ta6 phase and that of Ta in the Fe7Mo6 are large. The solubility of Mo in Fe7Ta6 is 16.5at.% at 800 degrees C and 19.2at.% at 1000 degrees C. In contrast, the solubility of Ta in Fe7Mo6 is 29.3at.% at 800 degrees C and 15.7at.% at 1000 degrees C. In addition, Fe2Ta and Fe2Mo can combine as a continuous solid solution, denoted as Fe-2(Mo, Ta), in the 800 degrees C isothermal section.

引用

页码：413 / 422

页数：10

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