On the formation of WC1-x in nanocrystalline cemented carbides

被引：34
作者：
Gao, Yang [1 ]
Song, Xiaoyan [1 ]
Liu, Xuemei [1 ]
Wei, Chongbin [1 ]
Wang, Haibin [1 ]
Guo, Guangsheng [1 ]
机构：
[1] Beijing Univ Technol, Coll Mat Sci & Engn, Key Lab Adv Funct Mat, Educ Minist China, Beijing 100124, Peoples R China
来源：
SCRIPTA MATERIALIA | 2013年 / 68卷 / 02期
基金：
北京市自然科学基金; 中国国家自然科学基金;
关键词：
Cemented carbides; Nanocrystalline; Interface; Orientation relationship; TUNGSTEN;
D O I：
10.1016/j.scriptamat.2012.09.016
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
In contrast to the general assumption that the WC1-x, phase is stable only at temperatures above 2500 degrees C, in the present study WC1-x is discovered to exist stably at room temperature in nanocrystalline cemented carbides. Based on characterization of the microstructure, crystallographic features and orientation relationships, the formation mechanism for the WC1-x phase in the nanocrystalline structure is proposed, and the conditions of the surface energy and composition are discussed. (C) 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：108 / 110
页数：3
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