Influence of long-term thermal aging on the microstructural and tensile properties of all-oxide ceramic matrix composites

doi:10.1016/j.ceramint.2020.02.198

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	Influence of long-term thermal aging on the microstructural and tensile properties of all-oxide ceramic matrix composites
	Liu H 1; Pei CH 1; Yang JJ 1; Yang ZM(杨正茂)2
通讯作者	Yang, Zhengmao([email protected])
发表期刊	CERAMICS INTERNATIONAL
	2020-06-15
卷号	46 期号:9 页码:8
ISSN	0272-8842
摘要	The mechanical properties of Nextel (TM) 610-reinforced ceramic composites in the on-axis direction after a long-term thermal exposure at 1200 degrees C for 200 h are studied using tensile tests. To clarify the mechanisms underlying the effects of thermal exposure on the macromechanical properties of oxide/oxide ceramic matrix composites, variations in the microstructure and micromechanical properties of these materials (including the fibre grain size and the porosity distribution) are analyzed. Grain coarsening is the most significant feature arising from heat treatment and porosity decreases with increasing heat-treatment time. The dimensions and weight of the specimen also decrease. Given the microstructural changes observed after heat treatment, a model based on mesoscopic-scale approaches is proposed to clarify the influence of thermal exposure on the mechanical properties of the composite, including its stiffness, ultimate failure modes, and strength.
关键词	Ceramic-matrix composites (CMCs) Lone-term thermal aging Microstructure evolution Mechanical properties
DOI	10.1016/j.ceramint.2020.02.198
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000530649900131
关键词[WOS]	MECHANICAL-PROPERTIES ; DAMAGE EVOLUTION ; FIBER ; DEGRADATION
WOS研究方向	Materials Science
WOS类目	Materials Science, Ceramics
资助项目	Strategic Priority Research Program of the Chinese Academy of Sciences[XDA17030100]
项目资助者	Strategic Priority Research Program of the Chinese Academy of Sciences
论文分区	一类
力学所作者排名	1
RpAuthor	Yang, Zhengmao
引用统计
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/82022
专题	空天飞行科技中心
作者单位	1.Tsinghua Univ, Sch Aerosp Engn, Beijing, Peoples R China; 2.Chinese Acad Sci, Inst Mech, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Liu H,Pei CH,Yang JJ,et al. Influence of long-term thermal aging on the microstructural and tensile properties of all-oxide ceramic matrix composites[J]. CERAMICS INTERNATIONAL,2020,46,9,:8.Rp_Au:Yang, Zhengmao
APA	Liu H,Pei CH,Yang JJ,&杨正茂.(2020).Influence of long-term thermal aging on the microstructural and tensile properties of all-oxide ceramic matrix composites.CERAMICS INTERNATIONAL,46(9),8.
MLA	Liu H,et al."Influence of long-term thermal aging on the microstructural and tensile properties of all-oxide ceramic matrix composites".CERAMICS INTERNATIONAL 46.9(2020):8.

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