Grain size effect on precipitation behavior of nanostructured Inconel 718

doi:10.1016/j.jmst.2024.03.022

IMR OpenIR

	Grain size effect on precipitation behavior of nanostructured Inconel 718
	Tang, Y. G.1,2; Zhang, B. B.1; Gan, B.3; Li, X. Y.1
通讯作者	Zhang, B. B.(bbzhang@imr.ac.cn) ; Li, X. Y.(xyli@imr.ac.cn)
	2024-12-10
发表期刊	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN	1005-0302
卷号	202 页码:55-66
摘要	To provide insight into the effect of grain size on the precipitation behavior of gamma '' strengthening superalloy Inconel 718, a gradient nanostructure with a large grain size span (from 9 nm to tens of microns) along the depth direction was achieved by mean of surface mechanical grinding treatment, followed by annealing upon 700-1000 degrees C for 1 h. The results reveal significant differences in the type and size of precipitates in samples with different grain sizes. No gamma '' precipitate was detected inside the grains as the grain size was refined down to 40 nm (NG-40) and 9 nm (NG-9). For delta phase, a significantly accelerated precipitation along grain boundary was observed in NG-40 upon 700 degrees C annealing. Interestingly, with the grain size drops to 9 nm, the precipitation of delta was suppressed, with some nanosized MC carbides appearing upon annealing. The grain size effect of precipitation behavior endows NG-9 an ultra-high RThardness (5.2 GPa) after 1000 degrees C thermal exposure and an ultra-high hot-hardness (3.2 GPa) at 800 degrees C. (c) 2024 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
关键词	Inconel 718 Precipitation Grain size effect Nanograins
资助者	Chinese Academy of Sciences ; National Natural Science Foundation of China ; Youth Innovation Promotion Association CAS
DOI	10.1016/j.jmst.2024.03.022
收录类别	SCI
语种	英语
资助项目	Chinese Academy of Sciences[XDB0510400] ; National Natural Science Foundation of China[52225102] ; Youth Innovation Promotion Association CAS[2023201]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001239147900001
出版者	JOURNAL MATER SCI TECHNOL
引用统计	被引频次：5[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/186966
专题	中国科学院金属研究所
通讯作者	Zhang, B. B.; Li, X. Y.
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Cent Iron & Steel Res Inst, Beijing Key Lab Adv High Temp Mat, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	Tang, Y. G.,Zhang, B. B.,Gan, B.,et al. Grain size effect on precipitation behavior of nanostructured Inconel 718[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2024,202:55-66.
APA	Tang, Y. G.,Zhang, B. B.,Gan, B.,&Li, X. Y..(2024).Grain size effect on precipitation behavior of nanostructured Inconel 718.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,202,55-66.
MLA	Tang, Y. G.,et al."Grain size effect on precipitation behavior of nanostructured Inconel 718".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 202(2024):55-66.