Phase equilibria of the Al-Co-W system at 600 °C

被引：7
|
作者：
Liu, Ya [1 ,2 ]
Tang, Maoyou [1 ,2 ]
Zhang, Yifan [1 ]
Peng, Haoping [1 ,2 ]
Wang, Jianhua [1 ,2 ]
Su, Xuping [1 ,2 ]
机构：
[1] Changzhou Univ, Key Lab Mat Surface Sci & Technol Jiangsu Prov, Changzhou 213164, Peoples R China
[2] Changzhou Univ, Jiangsu Collaborat Innovat Ctr Photovolta Sci & E, Changzhou 213164, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2016年 / 678卷
基金：
中国国家自然科学基金;
关键词：
High-temperature material; Al-Co-W; Phase equilibria; Thermodynamic; ALLOYS; TEMPERATURE; STABILITY; 1ST-PRINCIPLES;
D O I：
10.1016/j.jallcom.2016.03.264
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：
Phase relationship in the ternary Al-Co-W system was established for the whole composition range at 600 degrees C by X-ray powder diffraction, scanning electron microscopy and energy dispersive spectroscopy. Isothermal section of this system comprises of 15 three-phase and 28 two-phase regions. Except the L1(2)-g(0) phase, a new ternary phase T has been found. The average composition of the T phase is 22.6 at.% Al, 67.0 at.% Co and W in balance. The solubility of W in AlCo is 3.0 at%, the solubility of Al in Co3W and Co7W6 is both 3.1 at%, and the solubility of Co in Al4W reaches 3.6 at.%. Solubility of the third component in the other binary phases is limited. The present work is essential to develop a thermodynamic database for Co-related high-temperature alloy design. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：193 / 200
页数：8
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