Tensile properties of Ti-48Al-2Cr-2Nb alloy having similarly oriented lamellae with fine lamellar spacing facilitated by suction casting

doi:10.1016/j.msea.2021.142303

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	Tensile properties of Ti-48Al-2Cr-2Nb alloy having similarly oriented lamellae with fine lamellar spacing facilitated by suction casting
	Xia, Zhizhou 1,2; Cui, Yuyou 1; Shen, Yingying 1; Arroussi, Mohammed 1,2; Liu, Ronghua 1; Yang, Liang 1; Jia, Qing 1; Yang, Rui 1
刊名	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
	2022-01-07
卷号	830 页码:11
关键词	TiAl alloy Oriented lamellar microstructure Lamellar spacing Tensile properties Fracture behavior
ISSN号	0921-5093
DOI	10.1016/j.msea.2021.142303
通讯作者	Yang, Rui(ryang@imr.ac.cn)
英文摘要	Ti-48Al-2Cr-2Nb (at. pet) billet was prepared by suction casting into a cold steel mould, and its microstructures and mechanical properties at room and elevated temperatures were investigated. The billet featured lamellar microstructure with refined colony sizes, fine interlamellar spacing, and lamellar interfaces nearly parallel to the mould surface with a scatter angle within 30 degrees. Benefitting from this microstructure, the billet showed excellent mechanical properties at temperatures up to 850 degrees C, with yield strength of 629 +/- 29 MPa at ambient temperature, 549 +/- 14 MPa at 650 degrees C, 565 +/- 17 MPa at 700 degrees C, 475 +/- 6 MPa at 800 degrees C and 413 +/- 9 MPa at 850 degrees C, comparable to that of the third-generation TiAl alloys like TNM but much superior to that of most reported cast Ti-48Al-2Cr-2Nb alloys. The total fracture elongation at room temperature and 700 degrees C were (1.8 +/- 0.2) % and (15.9 +/- 3.5) %, respectively. Although the fracture at 700 degrees C occurred in a brittle mode, the tensile samples possessed ductile tensile elongation.
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000730159200003
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/167322]
专题	金属研究所_中国科学院金属研究所
通讯作者	Yang, Rui
作者单位	1.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230022, Peoples R China
推荐引用方式 GB/T 7714	Xia, Zhizhou,Cui, Yuyou,Shen, Yingying,et al. Tensile properties of Ti-48Al-2Cr-2Nb alloy having similarly oriented lamellae with fine lamellar spacing facilitated by suction casting[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2022,830:11.
APA	Xia, Zhizhou.,Cui, Yuyou.,Shen, Yingying.,Arroussi, Mohammed.,Liu, Ronghua.,...&Yang, Rui.(2022).Tensile properties of Ti-48Al-2Cr-2Nb alloy having similarly oriented lamellae with fine lamellar spacing facilitated by suction casting.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,830,11.
MLA	Xia, Zhizhou,et al."Tensile properties of Ti-48Al-2Cr-2Nb alloy having similarly oriented lamellae with fine lamellar spacing facilitated by suction casting".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 830(2022):11.