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Evolution of crystallographic orientation and microstructure in the triangular adapter of grain continuator of a 3rd-generation single crystal superalloy casting during directional solidification
Xiao, Jiuhan1,2; Jiang, Weiguo1,3; Han, Dongyu1,2; Li, Kaiwen1; Lu, Yuzhang1; Lou, Langhong1
Corresponding AuthorJiang, Weiguo(jwg@wfust.edu.cn)
2022-03-25
Source PublicationJOURNAL OF ALLOYS AND COMPOUNDS
ISSN0925-8388
Volume898Pages:12
AbstractThe evolution of the crystallographic orientation and the microstructures in triangular adapters of grain continuators (GCs) with different flare angles and thicknesses prepared by a 3rd-generation single crystal (SX) superalloy were investigated under different withdrawal rates. The microstructures were observed by an optical microscope and the crystallographic orientation of the GCs was measured by electron backscatter diffraction (EBSD). The directional solidification process was simulated by a commercial simulation software ProCAST. The experimental results showed that the [001] misorientation between both sides of the GCs at top cross section increased with the increasing of the flare angle, the thickness of specimens, and the withdrawal rate. These phenomena were attributed to the changing of the isotherm morphology in the mushy zones and the velocity of the solidification front. As for a low flare angle, the freckle defect formed at one side of specimens under the withdrawal rate of 1 mm/min. With the increasing of flare angle, the freckle defect cannot be found at the same position of the specimens. The formation mechanisms of freckle defect in the triangular adapters of GCs were further discussed. (c) 2021 Elsevier B.V. All rights reserved.
KeywordSingle-crystal superalloy Dendrite growth Crystallographic orientation Freckle formation Flare angle Withdrawal rate
Funding OrganizationNational Natural Science Foundation of China ; National Science and Technology Major Project of China
DOI10.1016/j.jallcom.2021.162782
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[51674235] ; National Science and Technology Major Project of China[2017-VI-0001-0070] ; National Science and Technology Major Project of China[2017-VI-0019-0091]
WOS Research AreaChemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectChemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000749539800003
PublisherELSEVIER SCIENCE SA
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/173574
Collection中国科学院金属研究所
Corresponding AuthorJiang, Weiguo
Affiliation1.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China
2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
3.Weifang Univ Sci & Technol, Shouguang 262700, Peoples R China
Recommended Citation
GB/T 7714
Xiao, Jiuhan,Jiang, Weiguo,Han, Dongyu,et al. Evolution of crystallographic orientation and microstructure in the triangular adapter of grain continuator of a 3rd-generation single crystal superalloy casting during directional solidification[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2022,898:12.
APA Xiao, Jiuhan,Jiang, Weiguo,Han, Dongyu,Li, Kaiwen,Lu, Yuzhang,&Lou, Langhong.(2022).Evolution of crystallographic orientation and microstructure in the triangular adapter of grain continuator of a 3rd-generation single crystal superalloy casting during directional solidification.JOURNAL OF ALLOYS AND COMPOUNDS,898,12.
MLA Xiao, Jiuhan,et al."Evolution of crystallographic orientation and microstructure in the triangular adapter of grain continuator of a 3rd-generation single crystal superalloy casting during directional solidification".JOURNAL OF ALLOYS AND COMPOUNDS 898(2022):12.
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