Tensile Behavior of SiC Fiber-Reinforced gamma-TiAl Composites Prepared by Suction Casting

doi:10.1007/s40195-020-01170-5

IMR OpenIR

	Tensile Behavior of SiC Fiber-Reinforced gamma-TiAl Composites Prepared by Suction Casting
	Shen, Yingying 1,2; Jia, Qing 1; Zhang, Xu 1; Liu, Ronghua 1; Wang, Yumin 1; Cui, Yuyou 1; Yang, Rui 1
通讯作者	Jia, Qing(qjia@imr.ac.cn) ; Yang, Rui(ryang@imr.ac.cn)
	2021-01-02
发表期刊	ACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN	1006-7191
页码	11
摘要	The process of preparing SiC fiber-reinforced gamma-TiAl composites by the conventional methods is difficult and complicated due to the high reactivity, high melting point and poor deformability of gamma-TiAl alloys. In this work, suction casting, a promising method for preparing SiCf/TiAl composite, had been attempted. In the process, gamma-TiAl alloy melt was introduced rapidly into a mold within pre-arranged fibers that were coated with additional layer of titanium alloy. This simple method successfully prevented serious reactions between the alloy melt and the fibers which remained intact during the solidification process. The interfacial reaction layer was observed by optical microscopy, scanning electron microscopy (SEM). The interfacial reaction products were identified by transmission electron microscopy (TEM). Tensile tests of the matrix alloy and composites were performed at room temperature and 800 degrees C. The results exhibited that the tensile strength of SiCf/gamma-TiAl composite was higher than that of the matrix alloy at both room temperature and 800 degrees C. At room temperature, tensile strength of SiCf/gamma-TiAl composite was increased by about 7% (50 MPa), whereas a double increase in tensile strength 14% (100 MPa) was obtained at 800 degrees C. The titanium alloy coating on the fiber not only prevented the serious interfacial reaction between the gamma-TiAl alloy melt and the SiC fiber, but also played a role in delaying the propagation of cracks in the matrix to the fiber at 800 degrees C. The fracture mechanism of the composite was analyzed by fracture metallographic analysis.
关键词	Suction casting SiCf/gamma-TiAl composite Interfacial reaction Tensile strength Fracture mechanism
资助者	Innovation Fund of Institute of Metal Research, Chinese Academy of Sciences
DOI	10.1007/s40195-020-01170-5
收录类别	SCI
语种	英语
资助项目	Innovation Fund of Institute of Metal Research, Chinese Academy of Sciences[2015-ZD03]
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000604239800002
出版者	CHINESE ACAD SCIENCES, INST METAL RESEARCH
引用统计	被引频次：12[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/321006/158895
专题	中国科学院金属研究所
通讯作者	Jia, Qing; Yang, Rui
作者单位	1.Chinese Acad Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, 72 Wenhua Rd, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Shen, Yingying,Jia, Qing,Zhang, Xu,et al. Tensile Behavior of SiC Fiber-Reinforced gamma-TiAl Composites Prepared by Suction Casting[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2021:11.
APA	Shen, Yingying.,Jia, Qing.,Zhang, Xu.,Liu, Ronghua.,Wang, Yumin.,...&Yang, Rui.(2021).Tensile Behavior of SiC Fiber-Reinforced gamma-TiAl Composites Prepared by Suction Casting.ACTA METALLURGICA SINICA-ENGLISH LETTERS,11.
MLA	Shen, Yingying,et al."Tensile Behavior of SiC Fiber-Reinforced gamma-TiAl Composites Prepared by Suction Casting".ACTA METALLURGICA SINICA-ENGLISH LETTERS (2021):11.