On the dendrite deformation and evolution mechanism of Ni-based superalloy during directional solidification

doi:10.1016/j.jallcom.2021.161949

CORC > 金属研究所 > 中国科学院金属研究所

	On the dendrite deformation and evolution mechanism of Ni-based superalloy during directional solidification
	Chen, Chao 1,2; Sun, Jingxia 1,2; Diao, Aimin 3; Yang, Yanhong 1; Li, Jinguo 1; Zhou, Yizhou 1
刊名	JOURNAL OF ALLOYS AND COMPOUNDS
	2022-01-25
卷号	891 页码:8
关键词	Directional solidification Dendritic growth Misorientation Ni-based superalloy
ISSN号	0925-8388
DOI	10.1016/j.jallcom.2021.161949
通讯作者	Yang, Yanhong(yhyang@imr.ac.cn) ; Zhou, Yizhou(yzzhouimr@163.com)
英文摘要	The 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.
资助项目	National Science and Technology Major Project[2017-VI-0003-0073]
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000707002300002
资助机构	National Science and Technology Major Project
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/166526]
专题	金属研究所_中国科学院金属研究所
通讯作者	Yang, Yanhong; Zhou, Yizhou
作者单位	1.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
推荐引用方式 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.