Abnormal feather-like grains induced by the thin-wall effect in a polycrystalline nickel-based superalloy

doi:10.1016/j.jallcom.2021.163581

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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
刊名	JOURNAL OF ALLOYS AND COMPOUNDS
	2022-04-25
卷号	901 页码:10
关键词	Polycrystalline superalloy Thin-wall effect Feather-like grains Residual stress Numerical simulation
ISSN号	0925-8388
DOI	10.1016/j.jallcom.2021.163581
通讯作者	Sheng, Naicheng(ncsheng@imr.ac.cn)
英文摘要	The 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.
资助项目	IMR 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:000749784600001
资助机构	IMR Innovation Fund, China ; China Postdoctoral Science Foundation, China ; Special Research Assistant Program of Chinese Academy of Sciences, China ; Postdoctoral Innovation Talents Support Program, China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/173535]
专题	金属研究所_中国科学院金属研究所
通讯作者	Sheng, Naicheng
作者单位	Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China
推荐引用方式 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.