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 2; Pei CH 2; Yang JJ 2; Yang ZM(杨正茂)1
刊名	CERAMICS INTERNATIONAL
	2020-06-15
卷号	46 期号:9 页码:8
关键词	Ceramic-matrix composites (CMCs) Lone-term thermal aging Microstructure evolution Mechanical properties
ISSN号	0272-8842
DOI	10.1016/j.ceramint.2020.02.198
通讯作者	Yang, Zhengmao(zmyang@imech.ac.cn)
英文摘要	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.
分类号	一类
资助项目	Strategic Priority Research Program of the Chinese Academy of Sciences[XDA17030100]
WOS关键词	MECHANICAL-PROPERTIES ; DAMAGE EVOLUTION ; FIBER ; DEGRADATION
WOS研究方向	Materials Science
语种	英语
WOS记录号	WOS:000530649900131
资助机构	Strategic Priority Research Program of the Chinese Academy of Sciences
其他责任者	Yang, Zhengmao
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/82021]
专题	空天飞行科技创新研究中心（筹）
作者单位	1.Chinese Acad Sci, Inst Mech, Beijing, Peoples R China 2.Tsinghua Univ, Sch Aerosp Engn, 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.
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.