Enhanced fatigue performance of γ/γ′ dual-phase single-crystal superalloys with graded surface nanostructures

doi:10.1016/j.msea.2024.147339

IMR OpenIR

	Enhanced fatigue performance of γ/γ′ dual-phase single-crystal superalloys with graded surface nanostructures
	Dang, Xiaofeng 1; Liang, Xiaoqing 2; He, Weifeng 2,3; Lu, Kaiju 4; Li, Jinguo 5; Zhou, Liucheng 2,3; Wang, Xin 6; Luo, Sihai 2; Li, Yao 7,8
通讯作者	He, Weifeng(hehe_coco@163.com) ; Luo, Sihai(luo_hai@126.com) ; Li, Yao(liyaomse@chd.edu.cn)
	2024-11-01
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	916 页码:16
摘要	Shot peening (SP) is a common surface-strengthening technique for improving the fatigue resistance of gamma/gamma ' dualphase Ni-based superalloys, yet the coordinated deformation mechanism of gamma/gamma ' dual-phase architecture and its role in fatigue strengthening remain elusive. In this study, unique graded surface nanostructures were reported for the first time in shot peened single-crystal (SX) superalloys that possessed a six-fold fatigue life improvement compared to their non-treated counterparts. The graded nanostructures were composed of (i) outermost "fully nanocrystallized zone" (average grain size similar to 55 nm) with nearly complete dissolution of gamma ' precipitates, (ii) "transition zone" with partially fragmented gamma ' precipitates, and (iii) "partially nanocrystallized gamma channel zone" with the emergence of nanograins merely in the gamma channels. These observations advance the previous understanding that only fully nanocrystallized zone is present in the SP-treated gamma/gamma ' SX superalloys. The graded surface nanostructures, together with work hardening and compressive residual stress, hindered strain localization and delayed crack initiation in the original soft gamma matrix channels, thus prolonging the fatigue life. The collective outcomes of this work not only provide in-depth insights into the deformation mechanisms in shot-peened gamma/gamma ' dual-phase superalloys but also can be used to further tune their surface nanostructures and hence mechanical properties.
关键词	Ni-based single-crystal superalloys Shot peening Fatigue life Graded surface nanostructures gamma/gamma ' dual-phase architecture
资助者	Postdoctoral Fellowship Program of CPSF ; National Science and Technology Major Project of China ; Postdoctoral Science Foundation of China ; National Natural Science Foundation of China ; Young Elite Scientist Sponsorship Program by CAST
DOI	10.1016/j.msea.2024.147339
收录类别	SCI
语种	英语
资助项目	Postdoctoral Fellowship Program of CPSF[GZC20241381] ; National Science and Technology Major Project of China[J2019-III-0008-0051] ; National Science and Technology Major Project of China[J2019-IV-003-0070] ; Postdoctoral Science Foundation of China[2022M720530] ; National Natural Science Foundation of China[52375225] ; Young Elite Scientist Sponsorship Program by CAST[20200321]
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:001334227500001
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：4[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/321006/190632
专题	中国科学院金属研究所
通讯作者	He, Weifeng; Luo, Sihai; Li, Yao
作者单位	1.Xian Shiyou Univ, Sch Mech Engn, Xian 710065, Peoples R China 2.Air Force Engn Univ, Natl Key Lab Aerosp Power Syst & Plasma Technol, Xian 710038, Peoples R China 3.Xi An Jiao Tong Univ, Natl Key Lab Aerosp Power Syst & Plasma Technol, Xian 710049, Peoples R China 4.Acad Mil Sci, Def Innovat Inst, Beijing 100071, Peoples R China 5.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Superalloys Div, Shenyang 110016, Peoples R China 6.AECC Beijing Inst Aeronaut Mat, Surface Engn Inst, Beijing 100095, Peoples R China 7.Changan Univ, Sch Mat Sci & Engn, Xian 710064, Peoples R China 8.Changan Univ, Key Lab Rd Construction Technol & Equipment, Minist Educ, Xian 710064, Peoples R China
推荐引用方式 GB/T 7714	Dang, Xiaofeng,Liang, Xiaoqing,He, Weifeng,等. Enhanced fatigue performance of γ/γ′ dual-phase single-crystal superalloys with graded surface nanostructures[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2024,916:16.
APA	Dang, Xiaofeng.,Liang, Xiaoqing.,He, Weifeng.,Lu, Kaiju.,Li, Jinguo.,...&Li, Yao.(2024).Enhanced fatigue performance of γ/γ′ dual-phase single-crystal superalloys with graded surface nanostructures.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,916,16.
MLA	Dang, Xiaofeng,et al."Enhanced fatigue performance of γ/γ′ dual-phase single-crystal superalloys with graded surface nanostructures".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 916(2024):16.