Experimental investigation of phase equilibria in the Co-W-Nb ternary system

被引：13

作者：

Liu, Xingjun

Zhang, Xinqiao

Yang, Shuiyuan

Zhao, Cancan

Wang, Cuiping ^{[1
]}

机构：

[1] Xiamen Univ, Dept Mat Sci & Engn, Coll Mat, Xiamen 361005, Peoples R China

来源：

INTERMETALLICS | 2012年 / 31卷

基金：

中国国家自然科学基金;

关键词：

Ternary alloy systems; Phase diagrams; Microstructure; Electron microprobe; ALLOYS; GROWTH;

D O I：

10.1016/j.intermet.2012.06.008

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 in the Co-W-Nb ternary system were experimentally investigated using optical microscopy, electron probe microanalysis and X-ray diffraction on equilibrated alloys. In this study, isothermal sections of the Co-W-Nb ternary system at 1000 degrees C, 1100 degrees C and 1200 degrees C were determined, and no ternary compound was found. Further results show that a Nb-stabilized Co3W phase is stable at 1100 degrees C, but not at 1200 degrees C in the Co-W-Nb system. The alpha Co2Nb and gamma Co2Nb phases were identified to possess large solubility of W in the present study. The newly determined phase equilibria of the Co-W-Nb in the present study will provide useful information for the development of cemented carbides and high-temperature structural materials. (C) 2012 Elsevier Ltd. All rights reserved.

引用

收藏

页码：48 / 54

页数：7

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