Research on Single SiC Fiber Reinforced TC17 Composites Under Transverse Tension

doi:10.11900/0412.1961.2018.00124

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	Research on Single SiC Fiber Reinforced TC17 Composites Under Transverse Tension
	Liu Jialin 1,2; Wang Yumin 1; Zhang Guoxing 1; Zhang Xu 1; Yang Lina 1; Yang Qing 1; Yang Rui 1
刊名	ACTA METALLURGICA SINICA
	2018-12-11
卷号	54 期号:12 页码:1809-1817
关键词	SiC fiber titanium matrix composite interfacial shear strength transverse strength finite element simulation
ISSN号	0412-1961
DOI	10.11900/0412.1961.2018.00124
通讯作者	Wang Yumin(yuminwang@imr.ac.cn)
英文摘要	Transverse mechanical properties of titanium matrix composites (TMCs) play an important role during its engineering service. Although SiCf / TC17 composite is one of the most promising TMC candidates for aeroengine, as we know its transverse properties have not been reported yet until now. In this work, the transverse strength of single SiC fiber reinforced TC17 composite was evaluated using cruciform specimen. The surface and cross-section of fractured specimen were investigated by SEM to determine the failure position during tensile test. Finite element simulation method was also used to analyze the mechanism of interfacial failure and crack propagation. During the transverse tensile test of single fiber specimen, the initial non-linearity in the stress-strain curve occurred at the stress of (271 +/- 12) MPa, which indicated the beginning of fiber-matrix interface failure. SEM observation showed that the crack in the center of sample appeared at the interface of reaction layer and carbon coating with a 24 degrees similar to 68 degrees angle to the applied loading direction and its length extended with the increase of the applied stress. The finite element simulation results based on bilinear cohesive element model showed that transverse fracture of composite interface was shear failure mode, which agreed well with the test results. Before the occurrence of non-linearity in the stress-strain curve, the crack initiated at the circular interface between reaction layer and carbon coating with a 40 degrees similar to 50 degrees angle to the applied loading direction. Crack initiation locations in test samples were different with those in simulation samples, because the actual composite interface was rough and some micro-flaws formed in the interface, whereas it was assumed to be an ideal rigid interface for simulation. Then the crack propagated along both circumferential and axial directions because of the shear stress. With the crack growing, the interface close to 0 degrees angle to the applied loading direction failed first caused by the radial tensile stress, whereas the interface near 90 degrees failed later as a result of circumferential shear stress. After complete failure of the interface, stress redistribution occurred around the SiC fiber and the interface separation increased with the increasing of the applied load, which gave rise to the yielding and deforming of the matrix near fiber until the final fracture of the composite.
WOS研究方向	Metallurgy & Metallurgical Engineering
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000454455600011
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/131128]
专题	金属研究所_中国科学院金属研究所
通讯作者	Wang Yumin
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Liu Jialin,Wang Yumin,Zhang Guoxing,et al. Research on Single SiC Fiber Reinforced TC17 Composites Under Transverse Tension[J]. ACTA METALLURGICA SINICA,2018,54(12):1809-1817.
APA	Liu Jialin.,Wang Yumin.,Zhang Guoxing.,Zhang Xu.,Yang Lina.,...&Yang Rui.(2018).Research on Single SiC Fiber Reinforced TC17 Composites Under Transverse Tension.ACTA METALLURGICA SINICA,54(12),1809-1817.
MLA	Liu Jialin,et al."Research on Single SiC Fiber Reinforced TC17 Composites Under Transverse Tension".ACTA METALLURGICA SINICA 54.12(2018):1809-1817.