Compressive strength and damage mechanisms of 2D-C/SiC composites at high temperatures
Compressive strength and damage mechanisms of 2D-C/SiC composites at high temperatures
复制标题
2D-C/SiC复合材料高温下的压缩强度和损伤机制
DOI:
10.1016/j.ceramint.2018.04.255
复制
发表时间:
2018-08
影响因子:
5.2
通讯作者:
Li Mei
中科院分区:
文献类型:
--
作者:
Li Lihua;Zhang Chengyu;Zhang Chen;Wang Kejie;Bai Hui;Han Dong;Li Mei
Compressive strength of 2D-C/SiC composite was investigated from room temperature(RT) to 1600 °C at present work. Damage evolution was investigated by conducting loading/unloading tests at RT and the damage mechanisms were elucidated by observing the fracture morphology. It is found that compressive strength of 2D-C/SiC was retained until 1200 °C and then decreased with increasing temperature. The variation of compressive strength is closely related to the degradation in matrix modulus. The compressive damage of 2D-C/SiC starts at the buckling of 0° fiber and is followed by opening and closing of original pores, initiation and growth of longitudinal interbundle cracks, separation of 90° fiber bundles by longitudinal cracks, matrix cracking from intrabundle pores, propagation of matrix cracks into 0° fiber bundles, connection of cracks in 0° fiber bundles and longitudinal cracks in 90° fiber bundles.
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DOI:
--
发表时间:
2007
期刊:
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影响因子:
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DOI:
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