The Fracture Toughness and DBTT of MoB Particle-Reinforced MoSi

The Fracture Toughness and DBTT of MoB Particle-Reinforced MoSi_2 Composites

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外文摘要：The room temperature fracture toughness and the high temperature DBTT of MoB particle-reinforced MoSi_2 composites were investigated using Vickers indentation technique and MSP testing method, respectively. Modified Small Punch (MSP) test is a method for evaluation of mechanical properties using very small specimens, and it's appropriate for the determination of strength and DBTT. It was found that the approximate fracture toughness of the composite is 1.3 times that of monolithic MoSi_2, and its DBTT is 100℃ higher than that of monolithic MoSi_2 materials. Cracks deflection is a probable mechanism responsible for this behavior.

外文关键词：

MoSi_2MoBMSPfracture toughnessDBTT

作者：

Zhi Xiong、Gang Wang、Wan Jiang

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作者单位：

State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, P.R.China

会议名称：

High-Performance Ceramics III pt.2; Key Engineering Materials; vol.280-283

会议地点：

Shenzhen(CN)

会议母体文献：

China International Conference on High-Performance Ceramics(CICC-3) pt.2; 20040509-12; Shenzhen(CN)

页码：

P.1471-1474

出版时间：

2004