Quasi-static and Dynamic Compressive Fracture Behavior of SiCf/SiC Composites

被引：4

作者：

Gao Xiaoju ^{[1
,2
]}

Cheng Laifei ^{[1
]}

Yan Dongming ^{[2
]}

Li Liangjun ^{[1
]}

机构：

[1] Northwestern Polytech Univ, Sci & Technol Thermostruct Composite Mat Lab, Xian 710072, Peoples R China

[2] 52 Inst China North Ind Grp, Yantai 264003, Peoples R China

来源：

JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION | 2015年 / 30卷 / 03期

关键词：

2D-SiCf/SiC; dynamic compressive; SHPB; Weibull distribution; failure mode; STRENGTH;

D O I：

10.1007/s11595-015-1176-8

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

To understand the quasi-static and dynamic compressive mechanical behavior of two-dimensional SiC fiber-reinforced SiC composites (2D-SiCf/SiC), their compressive behavior at room temperature was investigated at a strain rate from 10(-4) to 10(4) /s, and the fracture surfaces and damage morphology were observed. The results show that the dynamic failure strength of 2D-SiCf/SiC obeys the Weibull distribution, and the Weibull modulus is 5.66. Meanwhile, 2D-SiCf/SiC presents a transition from brittle to tough with a decrease of strain rate, and 2D-SiCf/SiC has a more significant strain rate sensitivity compared to the 2D-C/SiC composites. The failure mode of 2D-SiCf/SiC depends upon the strain rate.

引用

页码：484 / 488

页数：5

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