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On the dendrite deformation and evolution mechanism of Ni-based superalloy during directional solidification
Chen, Chao1,2; Sun, Jingxia1,2; Diao, Aimin3; Yang, Yanhong1; Li, Jinguo1; Zhou, Yizhou1
Corresponding AuthorYang, Yanhong(yhyang@imr.ac.cn) ; Zhou, Yizhou(yzzhouimr@163.com)
2022-01-25
Source PublicationJOURNAL OF ALLOYS AND COMPOUNDS
ISSN0925-8388
Volume891Pages:8
AbstractThe dendritic growth in a novel casting with complex solidification path during directional solidification was investigated by experiment and simulation. The different dendrite deformations were found in the side strip and the corner, and the misorientation was measured by electron backscattered diffraction. The dendrite deformation in the local strip above each platform causes the cumulative deviation of dendrite direction in the whole strip, and this deformation is caused by the differential thermal shrinkage between upper and lower cross-sections. In addition, the dendrite with incomplete trunk concentrately deformed in the corner, and the deviation direction is consistent with its branches toward the platform, indicating that the deformation occurs before branching and thereby thermal concentrated stress is excluded. The simulation results confirm the occurrence of horizontal shrinkage stress in the mushy zone of the platform when the dendrites in the sidebar leave the platform, and also determine that the dendrite branches occur before the effect of the thermal concentration stress in the corner. (c) 2021 Elsevier B.V. All rights reserved.
KeywordDirectional solidification Dendritic growth Misorientation Ni-based superalloy
Funding OrganizationNational Science and Technology Major Project
DOI10.1016/j.jallcom.2021.161949
Indexed BySCI
Language英语
Funding ProjectNational Science and Technology Major Project[2017-VI-0003-0073]
WOS Research AreaChemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectChemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000707002300002
PublisherELSEVIER SCIENCE SA
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Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/166527
Collection中国科学院金属研究所
Corresponding AuthorYang, Yanhong; Zhou, Yizhou
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.Naval Univ Engn, Coll Naval Architecture & Ocean Engn, Wuhan 430000, Peoples R China
Recommended Citation
GB/T 7714
Chen, Chao,Sun, Jingxia,Diao, Aimin,et al. On the dendrite deformation and evolution mechanism of Ni-based superalloy during directional solidification[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2022,891:8.
APA Chen, Chao,Sun, Jingxia,Diao, Aimin,Yang, Yanhong,Li, Jinguo,&Zhou, Yizhou.(2022).On the dendrite deformation and evolution mechanism of Ni-based superalloy during directional solidification.JOURNAL OF ALLOYS AND COMPOUNDS,891,8.
MLA Chen, Chao,et al."On the dendrite deformation and evolution mechanism of Ni-based superalloy during directional solidification".JOURNAL OF ALLOYS AND COMPOUNDS 891(2022):8.
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