Effect of densification mechanism on the Σ2 grain boundary plane distribution in WC-Co composites

被引：16

作者：

Yuan, Xiaokun ^{[1
]}

Song, Xiaoyan ^{[1
]}

Chien, Harry ^{[2
]}

Li, Jia ^{[2
]}

Rohrer, Gregory S. ^{[2
]}

机构：

[1] Beijing Univ Technol, Coll Mat Sci & Engn, Beijing 100124, Peoples R China

[2] Carnegie Mellon Univ, Dept Mat Sci & Engn, Pittsburgh, PA 15213 USA

来源：

MATERIALS LETTERS | 2013年 / 92卷

基金：

北京市自然科学基金; 美国安德鲁·梅隆基金会;

关键词：

Grain boundary; Cemented carbide; Sintering; Electron microscopy; Five parameter analysis; CHARACTER DISTRIBUTIONS; CEMENTED CARBIDES; TUNGSTEN CARBIDE; GROWTH;

D O I：

10.1016/j.matlet.2012.10.074

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of the densification mechanism on the Sigma 2 grain boundary plane distribution was investigated in WC-Co composites. Specimens were prepared separately by sintering in hot isostatic press (sinterHIP) and spark plasma sintering (SPS). It was found that the Sigma 2 twist boundary is the most common boundary in both cases, but that the SPS material had more than three times the relative area of these boundaries compared to the sinter-HIP material. Measurements of the WC/WC and WC/Co boundary lengths are compared to measured mechanical properties and found to be consistent with established stereological results, suggesting a path to link interface area measurements to the mechanical properties of WC-Co samples. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：86 / 89

页数：4

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