Crack propagation characteristic and toughness of functionally graded WC-Co cemented carbide

被引：25

作者：

Zhang Li ^{[1
]}

Wang Yuan-jie ^{[1
]}

Yu Xian-wang ^{[1
]}

Chen Shu ^{[2
]}

Xiong Xiang-jun ^{[1
]}

机构：

[1] Cent S Univ, State Key Lab Powder Met, Changsha 410083, Peoples R China

[2] Changsha Min & Met Res Inst, Changsha 410012, Peoples R China

来源：

INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS | 2008年 / 26卷 / 04期

基金：

中国国家自然科学基金;

关键词：

cemented carbide; functionally graded material; crack propagation; microstructure; fracture toughness;

D O I：

10.1016/j.ijrmhm.2007.07.002

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The propagation characteristic of cracks produced at the corners of Vickers indent and the toughness change in functionally graded WC-Co cemented carbide with dual phase structure were investigated. It is shown that cracks tend to propagate both around and across WC crystal grain and in the presence of eta phase across eta(W(3)Co(3)C) phase with high resistance. The changes of toughness with the microstructure and an integrated strengthening effect, as well as high toughness characteristic of the alloy are revealed. (C) 2007 Elsevier Ltd. All rights reserved.

引用

页码：295 / 300

页数：6

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