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Solidification and Evolution of beta-NiAl Phase in a Re-Containing Single Crystal Superalloy
Li, Y. M.2,3; Wang, X. G.1,2; Tan, Z. H.2; Yang, Y. H.2; Liu, J. L.2; Liu, J. D.2; Li, J. G.2; Zhou, Y. Z.2; Sun, X. F.2
Corresponding AuthorWang, X. G.(xgwang11b@imr.ac.cn) ; Sun, X. F.(xfsun@imr.ac.cn)
2022-04-05
Source PublicationMETALS AND MATERIALS INTERNATIONAL
ISSN1598-9623
Pages13
AbstractThe beta-NiAl phase, which may exacerbate the high-temperature mechanical properties of Ni-based superalloy, was observed in a designed Re-containing single crystal superalloy. The solidification mechanism of beta-NiAl phase and its evolution after solution treatment as well as long-term aging at 1120 degrees C were systematically investigated. The beta-NiAl phase was confirmed by the analyses of XRD and TEM in as-cast specimen. Combined the analyses of TEM, DSC, phase diagrams and chemical segregation behaviors obtained via EPMA, the solidification path in interdendritic region was determined as L -> (beta-NiAl+Cr) eutectie, L -> beta + delta, L +beta ->gamma', L -> gamma'. The beta-NiAl phase could be diminished by solution treatment and/ or long-term aging treatment. After the solution treatment at 1330 degrees C for 30 min, the p-NiAl phase split into small bulks and the delta phase dissolved, contributing to the formation of the gamma + gamma' structure and large blocky delta phase. During the long-term aging at the 1120 degrees C, the beta-NiAl phase transformed into gamma and gamma' phase. With aging time prolonging, the Cr-rich phase dissolved, which promoted the precipitation of TCP confirmed as mu phase with three morphologies.
KeywordNi-based superalloys beta-NiAl Solidification path Long-term aging TCP phase
Funding OrganizationNational Key R&D Program of China ; National Science and Technology Major Project ; National Natural Science Foundation of China (NSFC) ; Youth Innovation Promotion Association, Chinese Academy of Sciences Innovation Academy for Light-duty Gas Turbine, Chinese Academy of Sciences
DOI10.1007/s12540-021-01136-x
Indexed BySCI
Language英语
Funding ProjectNational Key R&D Program of China[2017YFA0700704] ; National Science and Technology Major Project[2017-VI-00020072] ; National Natural Science Foundation of China (NSFC)[51671188] ; Youth Innovation Promotion Association, Chinese Academy of Sciences Innovation Academy for Light-duty Gas Turbine, Chinese Academy of Sciences[CXYJJ20MS-03]
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000779037900001
PublisherKOREAN INST METALS MATERIALS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/172979
Collection中国科学院金属研究所
Corresponding AuthorWang, X. G.; Sun, X. F.
Affiliation1.Chinese Acad Sci, Innovat Acad Light Duty Gas Turbine, Beijing 100089, Peoples R China
2.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China
3.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Li, Y. M.,Wang, X. G.,Tan, Z. H.,et al. Solidification and Evolution of beta-NiAl Phase in a Re-Containing Single Crystal Superalloy[J]. METALS AND MATERIALS INTERNATIONAL,2022:13.
APA Li, Y. M..,Wang, X. G..,Tan, Z. H..,Yang, Y. H..,Liu, J. L..,...&Sun, X. F..(2022).Solidification and Evolution of beta-NiAl Phase in a Re-Containing Single Crystal Superalloy.METALS AND MATERIALS INTERNATIONAL,13.
MLA Li, Y. M.,et al."Solidification and Evolution of beta-NiAl Phase in a Re-Containing Single Crystal Superalloy".METALS AND MATERIALS INTERNATIONAL (2022):13.
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