Incommensurate modulated structure and nano-sized γ′ phase induced by Fe during creep at 650 degree celsius in Nickel-based model alloys

doi:10.1016/j.scriptamat.2024.115995

IMR OpenIR

	Incommensurate modulated structure and nano-sized γ′ phase induced by Fe during creep at 650 degree celsius in Nickel-based model alloys
	Li, Shaowei 1,2; Liu, Fang 2,3; Si, Tianxiao 2; Sun, Wenru 2,3
通讯作者	Liu, Fang(fangliu@imr.ac.cn) ; Sun, Wenru(wrsun@imr.ac.cn)
	2024-04-01
发表期刊	SCRIPTA MATERIALIA
ISSN	1359-6462
卷号	243 页码:7
摘要	As one of the most important matrix elements in superalloys, Fe has attracted great attention due to its low cost and significant impact on mechanical performance. Herein, the effects of Fe on microstructures and creep properties (650 degrees C/120 MPa) of Ni-based model alloys were investigated. Compared with Ni-17Cr-1.7Al (wt.%, called 0Fe alloy) alloy, the addition of Fe decreases the lattice misfit between gamma and gamma ' and promotes the precipitation of nano-sized gamma ' phase, thereby inhibiting dislocations slip and improving creep properties. Surprisingly, a few nano-scale incommensurate modulated domains are detected only in Ni-17Cr-15Fe-1.5Al (wt.%, called 15Fe alloy) alloy. The precipitation of gamma ' phase and the segregated Fe atoms suggest that the incommensurate modulated structures are induced by alternated process of dislocation slip and climb during creep. The present work provides crucial insights into the mechanism of Fe influencing microstructures and creep properties of the designed alloys.
关键词	Model alloys gamma'phase Incommensurate modulated structure Dislocations Creep properties
DOI	10.1016/j.scriptamat.2024.115995
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:001172004700001
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/321006/184859
专题	中国科学院金属研究所
通讯作者	Liu, Fang; Sun, Wenru
作者单位	1.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 3.72 Wenhua Rd, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Li, Shaowei,Liu, Fang,Si, Tianxiao,等. Incommensurate modulated structure and nano-sized γ′ phase induced by Fe during creep at 650 degree celsius in Nickel-based model alloys[J]. SCRIPTA MATERIALIA,2024,243:7.
APA	Li, Shaowei,Liu, Fang,Si, Tianxiao,&Sun, Wenru.(2024).Incommensurate modulated structure and nano-sized γ′ phase induced by Fe during creep at 650 degree celsius in Nickel-based model alloys.SCRIPTA MATERIALIA,243,7.
MLA	Li, Shaowei,et al."Incommensurate modulated structure and nano-sized γ′ phase induced by Fe during creep at 650 degree celsius in Nickel-based model alloys".SCRIPTA MATERIALIA 243(2024):7.