Mechanisms of Interfacial Reaction and Matrix Phase Transition in SiCf/Ti65 Composites

doi:10.11900/0412.1961.2020.00027

IMR OpenIR

	Mechanisms of Interfacial Reaction and Matrix Phase Transition in SiCf/Ti65 Composites
	Wang Chao 1,2; Zhang Xu 1; Wang Yumin 1; Yang Qing 1; Yang Lina 1; Zhang Guoxing 1; Wu Ying 1; Kong Xu 1; Yang Rui 1
通讯作者	Zhang Xu(xuzhang@imr.ac.cn) ; Wang Yumin(yuminwang@imr.ac.cn)
	2020-09-01
发表期刊	ACTA METALLURGICA SINICA
ISSN	0412-1961
卷号	56 期号:9 页码:1275-1285
摘要	Continuous silicon carbide (SIC) fiber-reinforced titanium metal-matrix composites (TMCs ) are potential candidates for high temperature application in jet engines because of their high specific strength and stiffness. However, severe interfacial reactions caused by high temperature manufacture and service have a detrimental effect on the mechanical properties of composites. Furthermore, the phase transition occurred in matrix at elevated temperature is unfavorable to the properties. In this work, the interfacial reaction, matrix phase transformation and thermal stability of SiC/Ti65 composites were investigated. The composites were prepared by the combination of magnetron sputtering and hot isostatic pressing (HIP) method. Matrix-coated precursor wires prepared by sputtering were aligned, degased and encapsulated, then consolidated by HIP. And the densified composites were subjected to long-term thermal exposure at 650, 750, 800 and 900 degrees C respectively. Reaction products and element diffusion of SiCf/ Ti65 composites in different conditions were studied. The results show that the elements diffuse and participate in both interfacial reaction and matrix phase transition during HIP and thermal exposure process. In the as-processed SiCf/Ti65 composites, TIC is the main product of interfacial reaction layer, and (Zr, Nb)(5)Si-4 is the product of matrix phase transition. With the continuous consumption of C-coating layer in the process of thermal exposure, Ti5Si3 and (Zr, Nb)(5)Si-4 form in the interfacial reaction layer, while Ti-3(Al, Sn)C and TiC precipitate in the matrix. The results of thermal stability study indicate a parabolic correlation between interfacial reaction layer thickness and exposure time, and the activation energy of reaction layer growth estimated by Arrhenius equation is 93 kJ/mol. The interface of SiCf/Ti65 composites is stable below 650 degrees C.
关键词	titanium matrix composites SIC fiber interfacial reaction element diffusion matrix phase transition
DOI	10.11900/0412.1961.2020.00027
收录类别	SCI
语种	英语
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000576758600010
出版者	SCIENCE PRESS
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/140878
专题	中国科学院金属研究所
通讯作者	Zhang Xu; Wang Yumin
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Wang Chao,Zhang Xu,Wang Yumin,et al. Mechanisms of Interfacial Reaction and Matrix Phase Transition in SiCf/Ti65 Composites[J]. ACTA METALLURGICA SINICA,2020,56(9):1275-1285.
APA	Wang Chao.,Zhang Xu.,Wang Yumin.,Yang Qing.,Yang Lina.,...&Yang Rui.(2020).Mechanisms of Interfacial Reaction and Matrix Phase Transition in SiCf/Ti65 Composites.ACTA METALLURGICA SINICA,56(9),1275-1285.
MLA	Wang Chao,et al."Mechanisms of Interfacial Reaction and Matrix Phase Transition in SiCf/Ti65 Composites".ACTA METALLURGICA SINICA 56.9(2020):1275-1285.