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

文献类型：期刊论文

作者Shen, Yingying1,2; Jia, Qing1; Zhang, Xu1; Liu, Ronghua1; Wang, Yumin1; Cui, Yuyou1; Yang, Rui1
刊名ACTA METALLURGICA SINICA-ENGLISH LETTERS
出版日期2021-01-02
页码11
ISSN号1006-7191
关键词Suction casting SiCf/gamma-TiAl composite Interfacial reaction Tensile strength Fracture mechanism
DOI10.1007/s40195-020-01170-5
通讯作者Jia, Qing(qjia@imr.ac.cn) ; Yang, Rui(ryang@imr.ac.cn)
英文摘要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.
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
语种英语
出版者CHINESE ACAD SCIENCES, INST METAL RESEARCH
WOS记录号WOS:000604239800002
资助机构Innovation Fund of Institute of Metal Research, Chinese Academy of Sciences
源URL[http://ir.imr.ac.cn/handle/321006/158894]  
专题金属研究所_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.

入库方式： OAI收割

来源：金属研究所

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