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Atomic configurations of planar defects in mu phase in Ni-based superalloys
Cheng, Yongxin1,2; Wang, Guanglei3; Liu, Jide3; He, Lianlong1
Corresponding AuthorHe, Lianlong(llhe@imr.ac.cn)
2021-03-01
Source PublicationSCRIPTA MATERIALIA
ISSN1359-6462
Volume193Pages:27-32
Abstractmu topologically close-packed phase commonly forms in superalloys and its intrinsic deformation is critical for their performance. Atomic configurations of planar defects in mu phase have been investigated by aberration-corrected scanning transmission electron microscopy and geometrical structure analysis. It is found that the basal slip in mu phase is accomplished by synchroshear inside Laves triple-layers, whereas shear deformations on non-basal planes are associated with long-range diffusions or local atomic rearrangements. Distinct from that on (1 (1) over bar 02) pyramidal planes, displacement vectors of planar faults on ( 1 (1) over bar 101) pyramidal planes deviate from the slip plane, leading to the contraction or dilation faulted regions. (C) 2020 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
Keywordmu phase Planar defects HAADF-STEM Displacement vectors Atomic configurations
Funding OrganizationNational Natural Science Foundation of China ; Dong Fang Turbine Co., Ltd
DOI10.1016/j.scriptamat.2020.09.045
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[51831001] ; Dong Fang Turbine Co., Ltd
WOS Research AreaScience & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectNanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000591503400006
PublisherPERGAMON-ELSEVIER SCIENCE LTD
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Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/158682
Collection中国科学院金属研究所
Corresponding AuthorHe, Lianlong
Affiliation1.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China
2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China
3.Chinese Acad Sci, Inst Met Res, Superalloys Div, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Cheng, Yongxin,Wang, Guanglei,Liu, Jide,et al. Atomic configurations of planar defects in mu phase in Ni-based superalloys[J]. SCRIPTA MATERIALIA,2021,193:27-32.
APA Cheng, Yongxin,Wang, Guanglei,Liu, Jide,&He, Lianlong.(2021).Atomic configurations of planar defects in mu phase in Ni-based superalloys.SCRIPTA MATERIALIA,193,27-32.
MLA Cheng, Yongxin,et al."Atomic configurations of planar defects in mu phase in Ni-based superalloys".SCRIPTA MATERIALIA 193(2021):27-32.
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