High-temperature compressive performance of the pre-impacted 2D-C/SiC composites: Coupling effect of pre-impact energy, temperature, temperature-keeping duration, and strain rate

被引：8

作者：

Hu, Wei ^{[1
]}

Huang, Jinzi ^{[1
]}

Li, Yihang ^{[1
]}

Chen, Lianyang ^{[1
]}

Guan, Tianhao ^{[1
]}

Sun, Yupeng ^{[1
]}

Wang, Bo ^{[1
,2
]}

Zhou, Xi ^{[4
]}

Suo, Tao ^{[1
,2
,3
]}

机构：

[1] Northwestern Polytech Univ, Sch Aeronaut, Xian 710072, Shaanxi, Peoples R China

[2] Northwestern Polytech Univ, Inst Extreme Mech, Xian 710072, Shaanxi, Peoples R China

[3] Northwestern Polytech Univ, Shaanxi Key Lab Impact Dynam & Engn Applicat IDEA, Xian 710072, Peoples R China

[4] Northwestern Polytech Univ, Sch Chem & Chem Engn, Xian 710072, Peoples R China

来源：

CARBON | 2021年 / 184卷

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

Ceramic matrix composites; Foreign object damage; High-temperature damage tolerance; Oxidation kinetics; Split Hopkinson bar; WOVEN C/SIC COMPOSITES; LOW-VELOCITY IMPACT; OXIDATION BEHAVIOR; MECHANISMS; KINETICS; COATINGS;

D O I：

10.1016/j.carbon.2021.08.036

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Two-dimensional carbon fiber reinforced silicon carbide (2D-C/SiC) composites are well-known for the high-temperature performance in aeronautical and aerospace fields, but they are susceptible to foreign object damage in service. Therefore, the high-temperature performance of pre-impacted 2D-C/SiC is closely connected with flight security. In this study, the pre-impact testing was conducted using a stress-reversal split Hopkinson bar, and the pre-impact energies were set from 0.1J to 0.9J. Subsequently, the pre-impacted specimens were heated for a period in the temperature-keeping procedure from 20 degrees C to 1600 degrees C. Oxidation kinetics of the pre-impacted 2D-C/SiC specimens were obtained based on the weight loss-temperature trends. Finally, the specimens were compressed under high temperatures at the strain rates from 10(-4)/s to 1000/s, so the residual compressive strength (RCS)-temperature trends were achieved. Hence, the correlation between the weight loss and the RCS was established. Interestingly, the pre-impact strengthening effect on the compressive strength was found. The results revealed that the RCS of 2D-C/SiC is affected by various parameters, providing new sights into the high-temperature damage tolerance of ceramic matrix composites. (C) 2021 Elsevier Ltd. All rights reserved.

引用

页码：728 / 751

页数：24