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Atomic configurations of various kinds of structural intergrowth in the polytypic M2B-type boride precipitated in the Ni-based superalloy
Hu, X. B.; Zhu, Y. L.; Shao, X. H.; Niu, H. Y.; Zhou, L. Z.; Ma, X. L.; xlma@imr.ac.cn
2015
Source PublicationACTA MATERIALIA
ISSN1359-6454
Volume100Pages:64-72
AbstractThe heavily faulted M2B-type borides precipitated in the long-term aging Ni-based superalloys with B addition are comprehensively studied at an atomic scale. By means of high angle annular dark field (HAADF) imaging technique in the aberration corrected scanning transmission electron microscope (STEM), atomic configurations of various kinds of structural intergrowth in the profoundly faulted M2B phase are directly imaged. The polytypic M2B phase is mainly composed of C16, C-b and C-a structural variants, in which planar defects and the resultant long period stacking order (LPSO) structure are identified. In combination of the advanced spectrometry imaging technique with density functional theory (DFT) calculations, it is proposed that the polytypic feature is attributed to the conservation of the basic polyhedron of anti-square prisms. (C) 2015 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
description.department[hu, x. b. ; zhu, y. l. ; shao, x. h. ; niu, h. y. ; ma, x. l.] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china ; [zhou, l. z.] chinese acad sci, inst met res, superalloys div, shenyang 110016, peoples r china
KeywordNi-based Superalloy Polytypic M2b-type Boride Structural Intergrowth Aberration Corrected Transmission Electron Microscope Atomic Configurations
Funding OrganizationNational Natural Foundation of China [11327901]; Ministry of Science & Technology of China [2010CB631206, 2009CB623705]
Indexed Bysci
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/74643
Collection中国科学院金属研究所
Corresponding Authorxlma@imr.ac.cn
Recommended Citation
GB/T 7714
Hu, X. B.,Zhu, Y. L.,Shao, X. H.,et al. Atomic configurations of various kinds of structural intergrowth in the polytypic M2B-type boride precipitated in the Ni-based superalloy[J]. ACTA MATERIALIA,2015,100:64-72.
APA Hu, X. B..,Zhu, Y. L..,Shao, X. H..,Niu, H. Y..,Zhou, L. Z..,...&xlma@imr.ac.cn.(2015).Atomic configurations of various kinds of structural intergrowth in the polytypic M2B-type boride precipitated in the Ni-based superalloy.ACTA MATERIALIA,100,64-72.
MLA Hu, X. B.,et al."Atomic configurations of various kinds of structural intergrowth in the polytypic M2B-type boride precipitated in the Ni-based superalloy".ACTA MATERIALIA 100(2015):64-72.
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