Quasi-static and Dynamic Compressive Fracture Behavior of SiCf/SiC Composites
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2015年第3期
论文作者：高晓菊 成来飞 YAN Dongming LI Liangjun
文章页码：484 - 488
摘 要：To understand the quasi-static and dynamic compressive mechanical behavior of twodimensional SiC fiber-reinforced SiC composites（2D-SiCf/Si C）, their compressive behavior at room temperature was investigated at a strain rate from 10-4 to 104 /s, and the fracture surfaces and damage morphology were observed. The results show that the dynamic failure strength of 2D-Si Cf/Si C 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-Si Cf/SiC has a more signifi cant strain rate sensitivity compared to the 2D-C/SiC composites. The failure mode of 2D-Si Cf/SiC depends upon the strain rate.
高晓菊1,2，成来飞1，YAN Dongming2，LI Liangjun1
1. Science and Technology on Thermostructural Composite Materials Laboratory, Northwestern Polytechnical University2. No.52 Institute of China North Industry Group
摘 要：To understand the quasi-static and dynamic compressive mechanical behavior of twodimensional SiC fiber-reinforced SiC composites（2D-SiCf/Si C）, their compressive behavior at room temperature was investigated at a strain rate from 10-4 to 104 /s, and the fracture surfaces and damage morphology were observed. The results show that the dynamic failure strength of 2D-Si Cf/Si C 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-Si Cf/SiC has a more signifi cant strain rate sensitivity compared to the 2D-C/SiC composites. The failure mode of 2D-Si Cf/SiC depends upon the strain rate.
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