Suppressing γ ′ precipitates coarsening at high volume fractions in a NiCoCr alloy by synergy of Co and Cr

doi:10.1016/j.scriptamat.2025.116561

IMR OpenIR

	Suppressing γ ′ precipitates coarsening at high volume fractions in a NiCoCr alloy by synergy of Co and Cr
	Yuan, S. Y.1; Yang, Y. Q.1; Zhang, B. B.2; Wang, K. G.3; Zhu, Y. T.4; Li, X. Y.2,5; Zhang, Y.1
通讯作者	Li, X. Y.(xyli@imr.ac.cn) ; Zhang, Y.(yong@njust.edu.cn)
	2025-04-01
发表期刊	SCRIPTA MATERIALIA
ISSN	1359-6462
卷号	259 页码:7
摘要	In this work, we investigated coarsening kinetics of gamma ' precipitates at 800-950 degrees C of a novel NiCoCr multicomponent alloy, which was designed to contain a high (Co+Cr) concentration and a high volume fraction of gamma ' precipitates. Experimental results demonstrated that gamma ' precipitates in the present NiCoCr alloy were more resistant to the thermal coarsening at temperatures above 900 degrees C as compared to conventional Ni-based alloys. Analysis using the modified Lifshitz-Slyozov-Wagner (LSW) model revealed that both Co and Cr could serve as the dominating species to control gamma ' precipitate coarsening. The synergy of Co and Cr led to the slower diffusion in the current NiCoCr alloy than those in dilute binary systems, responsible for the superior thermal stability of gamma ' precipitates. Our work provides a new guideline for exploring the compositional space of NiCoCr-based multi- component alloys with high volume fraction of gamma ' precipitates but low gamma ' coarsening rate.
关键词	High/Medium entropy alloy Coarsening kinetics Thermal stability gamma ' precipitates Diffusion
DOI	10.1016/j.scriptamat.2025.116561
收录类别	SCI
语种	英语
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001410667300001
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/180541
专题	中国科学院金属研究所
通讯作者	Li, X. Y.; Zhang, Y.
作者单位	1.Nanjing Univ Sci & Technol, Herbert Gleiter Inst Nanosci, Sch Mat Sci & Engn, Nanjing 210094, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 3.Florida Inst Technol, Mech & Civil Engn Dept, Melbourne, FL 32901 USA 4.City Univ Hong Kong, Dept Mat Sci & Engn, Hong Kong 999077, Peoples R China 5.Liaoning Acad Mat, Shenyang 110167, Peoples R China
推荐引用方式 GB/T 7714	Yuan, S. Y.,Yang, Y. Q.,Zhang, B. B.,等. Suppressing γ ′ precipitates coarsening at high volume fractions in a NiCoCr alloy by synergy of Co and Cr[J]. SCRIPTA MATERIALIA,2025,259:7.
APA	Yuan, S. Y..,Yang, Y. Q..,Zhang, B. B..,Wang, K. G..,Zhu, Y. T..,...&Zhang, Y..(2025).Suppressing γ ′ precipitates coarsening at high volume fractions in a NiCoCr alloy by synergy of Co and Cr.SCRIPTA MATERIALIA,259,7.
MLA	Yuan, S. Y.,et al."Suppressing γ ′ precipitates coarsening at high volume fractions in a NiCoCr alloy by synergy of Co and Cr".SCRIPTA MATERIALIA 259(2025):7.