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Abnormal feather-like grains induced by the thin-wall effect in a polycrystalline nickel-based superalloy
Sun, Shijie; Sheng, Naicheng; Fan, Shigang; Ma, Yuejiao; Cao, Xi; Sang, Zhiru; Hou, Guichen; Li, Jinguo; Zhou, Yizhou; Sun, Xiaofeng
Corresponding AuthorSheng, Naicheng(ncsheng@imr.ac.cn)
2022-04-25
Source PublicationJOURNAL OF ALLOYS AND COMPOUNDS
ISSN0925-8388
Volume901Pages:10
AbstractThe effect of wall thickness on the casting microstructures of polycrystalline Ni-based superalloy K465 was investigated. Abnormal feather-like grains with high-angle grain boundaries (HAGBs) were detected. The quantity of the feather-like grains increased with the decrease of the specimen thickness. Experimental investigation and numerical simulation results showed the cooling rate and the residual stress increased with the decrease of the specimen thickness. The increased residual stress and the heat treatment resulted from the sand box with elevated temperature induced the formation of the abnormal feather-like recrystallized grains. This work provides a guidance for producing turbine blades made of cast superalloys. (c) 2022 Elsevier B.V. All rights reserved.
KeywordPolycrystalline superalloy Thin-wall effect Feather-like grains Residual stress Numerical simulation
Funding OrganizationIMR Innovation Fund, China ; China Postdoctoral Science Foundation, China ; Special Research Assistant Program of Chinese Academy of Sciences, China ; Postdoctoral Innovation Talents Support Program, China
DOI10.1016/j.jallcom.2021.163581
Indexed BySCI
Language英语
Funding ProjectIMR Innovation Fund, China[2021-PY16] ; China Postdoctoral Science Foundation, China[2021M703275] ; Special Research Assistant Program of Chinese Academy of Sciences, China ; Postdoctoral Innovation Talents Support Program, China[BX2021322]
WOS Research AreaChemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectChemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000749784600001
PublisherELSEVIER SCIENCE SA
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/173536
Collection中国科学院金属研究所
Corresponding AuthorSheng, Naicheng
AffiliationChinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Sun, Shijie,Sheng, Naicheng,Fan, Shigang,et al. Abnormal feather-like grains induced by the thin-wall effect in a polycrystalline nickel-based superalloy[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2022,901:10.
APA Sun, Shijie.,Sheng, Naicheng.,Fan, Shigang.,Ma, Yuejiao.,Cao, Xi.,...&Sun, Xiaofeng.(2022).Abnormal feather-like grains induced by the thin-wall effect in a polycrystalline nickel-based superalloy.JOURNAL OF ALLOYS AND COMPOUNDS,901,10.
MLA Sun, Shijie,et al."Abnormal feather-like grains induced by the thin-wall effect in a polycrystalline nickel-based superalloy".JOURNAL OF ALLOYS AND COMPOUNDS 901(2022):10.
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