Study of dynamic compressive behaviors of 2D C/SiC composites at elevated temperatures based on in-situ observation

Chao Zhang, Tengfei Ren, Xinyue Zhang, Wei Hu, Zhen Wang, Bo Wang, Tao Suo

科研成果: 期刊稿件文章同行评审

25 引用 (Scopus)

摘要

Dynamic and quasi-static compressive behaviors of 2D C/SiC composites were examined from room temperature to 1600 °C based on in-situ observation, under the environment of air and argon. Tests were conducted respectively on a high temperature universal test machine and an improved high temperature split Hopkinson pressure bar. The improvement of the interface strength and the nucleation of multiple cracks influence the compressive strength under dynamic conditions. As the influence of thermal residual stress, the failure angles and compressive strength of the specimen increased with the increase of temperature in the argon environment. Owing to the competition between oxidation and thermal residual stress, the compressive strength of the specimen increased slightly with increasing temperature, and then dropped sharply for temperature above 700 °C in air. The strain rate sensitivity factor of 2D C/SiC composites increased significantly as the temperature increased in the air environment, but decreased in the argon environment.

源语言英语
页(从-至)5103-5119
页数17
期刊Journal of the European Ceramic Society
40
15
DOI
出版状态已出版 - 12月 2020

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