Microstructural characterization of the eta-Ni-3(Ti, Al) phase in a long-term-aged Ni-based superalloy

doi:10.1080/09500839.2017.1406193

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	Microstructural characterization of the eta-Ni-3(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
卷号	97 期号:11 页码:442-449
关键词	Nickel-based superalloys long-term ageing transmission electron microscopy eta-Ni-3(Ti, Al) phase interfacial features
ISSN号	0950-0839
DOI	10.1080/09500839.2017.1406193
英文摘要	Microstructural features of a geometrically closed packed hexagonal eta-Ni-3(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 n grain interior are clearly revealed at the atomic scale. A nano-sized gamma' phase is found at the defect regions of the micro-sized q phase. The interior gamma' phase keeps a good orientation relationship (OR) of (1 1 1)(gamma')//(0 0 0 1)(eta) and [1 (1) over bar0](gamma')//[2 (1) over bar (1) over bar 0](eta) with the eta-Ni-3(Ti, Al) phase. However, there is no definitive OR between eta-Ni-3(Ti, Al) grains and the surrounding matrix. By means of first-principle calculations, we reveal that a symmetrical interfacial feature between gamma' and eta corresponds to a lower energy state.
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering ; Physics
语种	英语
出版者	TAYLOR & FRANCIS LTD
WOS记录号	WOS:000435558300003
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/33487]
专题	兰州理工大学材料科学与工程学院
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 eta-Ni-3(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 eta-Ni-3(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 eta-Ni-3(Ti, Al) phase in a long-term-aged Ni-based superalloy".PHILOSOPHICAL MAGAZINE LETTERS 97.11(2017):442-449.