Microstructural characterization of the η-Ni3(Ti, Al) phase in a long-term-aged Ni-based superalloy

doi:10.1080/09500839.2017.1406193

CORC > 兰州理工大学 > 兰州理工大学

	Microstructural characterization of the η-Ni3(Ti, Al) phase in a long-term-aged Ni-based superalloy
	Hu, X. B.1; Guo, X. W.1,2; Wang, Y. J.1; Hou, J. S.3; Qin, X. Z.3; Zhou, L. Z.3; Liu, J. F.1; Ma, X. L.1,4
刊名	Philosophical Magazine Letters
	2017-11-02
卷号	97 期号:11 页码:442-449
关键词	Defects High resolution transmission electron microscopy Superalloys Transmission electron microscopy First principle calculations Interfacial features Long term ageing Micro-structural characterization Microstructural features Ni-based superalloys Nickel- based superalloys Orientation relationship
ISSN号	09500839
DOI	10.1080/09500839.2017.1406193
英文摘要	Microstructural features of a geometrically closed packed hexagonal η-Ni3(Ti, Al) phase precipitated in a long-term-aged Ni-based superalloy are characterised using various kinds of transmission electron microscope (TEM) techniques. The defect features in the η grain interior are clearly revealed at the atomic scale. A nano-sized γ′ phase is found at the defect regions of the micro-sized η phase. The interior γ′ phase keeps a good orientation relationship (OR) of (1 1 1)γ′//(0 0 0 1)η and [1 (Formula presented.) 0]γ′//[2 (Formula presented.) 0]η with the η-Ni3(Ti, Al) phase. However, there is no definitive OR between η-Ni3(Ti, Al) grains and the surrounding matrix. By means of first-principle calculations, we reveal that a symmetrical interfacial feature between γ′ and η corresponds to a lower energy state. © 2017 Informa UK Limited, trading as Taylor & Francis Group.
资助项目	National Natural Science Foundation of China[11327901] ; National Natural Science Foundation of China[51390473] ; National Natural Science Foundation of China[51571191]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering ; Physics
语种	英语
出版者	Taylor and Francis Ltd.
WOS记录号	WOS:000435558300003
状态	已发表
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/114786]
专题	兰州理工大学材料科学与工程学院
通讯作者	Ma, X. L.
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang, Liaoning, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei, Anhui, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Superalloys Div, Shenyang, Liaoning, Peoples R China 4.Lanzhou Univ Technol, Sch Mat Sci & Engn, Lanzhou, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Hu, X. B.,Guo, X. W.,Wang, Y. J.,et al. Microstructural characterization of the η-Ni3(Ti, Al) phase in a long-term-aged Ni-based superalloy[J]. Philosophical Magazine Letters,2017,97(11):442-449.
APA	Hu, X. B..,Guo, X. W..,Wang, Y. J..,Hou, J. S..,Qin, X. Z..,...&Ma, X. L..(2017).Microstructural characterization of the η-Ni3(Ti, Al) phase in a long-term-aged Ni-based superalloy.Philosophical Magazine Letters,97(11),442-449.
MLA	Hu, X. B.,et al."Microstructural characterization of the η-Ni3(Ti, Al) phase in a long-term-aged Ni-based superalloy".Philosophical Magazine Letters 97.11(2017):442-449.