Surface characteristics and microstructure evolution of a nickel-base single crystal superalloy treated by ultrasonic shot peening

doi:10.1016/j.jallcom.2022.165761

CORC > 金属研究所 > 中国科学院金属研究所

	Surface characteristics and microstructure evolution of a nickel-base single crystal superalloy treated by ultrasonic shot peening
	Li, Yifei 2,3; Shang, Xiaofeng 2,3; Zhai, Menggang 2,3; Yu, Lei 2,3; Wang, Li 1; Zhao, Su 2,3
刊名	JOURNAL OF ALLOYS AND COMPOUNDS
	2022-10-25
卷号	919 页码:16
关键词	Ultrasonic shot peening Single crystal superalloy Microstructure Surface characteristic Cold work layer
ISSN号	0925-8388
DOI	10.1016/j.jallcom.2022.165761
通讯作者	Zhao, Su(zhaosu@nimte.ac.cn)
英文摘要	The surface characteristics and microstructure of a [10 0]-oriented single crystal superalloy subjected to ultrasonic shot peening (USP) were investigated as a function of peening duration. The obtained results show that USP significantly increases the surface microhardness of the single crystal superalloy, reaching up to 650 HV. As peening duration increases, surface roughness and microhardness increase at first and then remain stable. Meanwhile, new components and orientations are formed on the treated surface. The depths of the cold work layer and slip band reach saturation with sufficient peening durations. However, the microstructure beneath the surface continues to evolve with increasing peening time. Excessive peening duration will facilitate the formation of curved slip bands, distinct misorientation and subgrains, which may damage the coherent strengthening of gamma/gamma ' structures and result in a lower hardness value in the depth direction. Combining the effects of surface alloying, strain-induced diffusion and strain-induced dissolution, four layers (i.e., the nanocrystalline alpha-Fe layer, Fe, Ti, Ni interdiffusion layer, nickel-based gamma '-free layer and deformed gamma/gamma ' layer) are formed on a single crystal substrate with sufficient USP durations. For single crystal superalloys, there exists an optimal processing duration to achieve the balance between surface hardening and coherent strengthening of gamma/gamma ' structures.(c) 2022 Elsevier B.V. All rights reserved.
资助项目	Pioneer and Leading Goose R &D Program of Zhejiang[2022C01114] ; Zhejiang Provincial Natural Science Foundation of China[LQ22E010011] ; Ningbo 3315 Innovation Team-Ultrasonic Impact Treatment Technology and Equipment[Y80929DL04] ; Ningbo Natural Science Foundation[2021J221] ; Ningbo Natural Science Foundation[202003N4356]
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:000816075500002
资助机构	Pioneer and Leading Goose R &D Program of Zhejiang ; Zhejiang Provincial Natural Science Foundation of China ; Ningbo 3315 Innovation Team-Ultrasonic Impact Treatment Technology and Equipment ; Ningbo Natural Science Foundation
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/174997]
专题	金属研究所_中国科学院金属研究所
通讯作者	Zhao, Su
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China 2.Zhejiang Key Lab Aero Engine Extreme Mfg Technol, Ningbo 315201, Peoples R China 3.Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Zhejiang, Peoples R China
推荐引用方式 GB/T 7714	Li, Yifei,Shang, Xiaofeng,Zhai, Menggang,et al. Surface characteristics and microstructure evolution of a nickel-base single crystal superalloy treated by ultrasonic shot peening[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2022,919:16.
APA	Li, Yifei,Shang, Xiaofeng,Zhai, Menggang,Yu, Lei,Wang, Li,&Zhao, Su.(2022).Surface characteristics and microstructure evolution of a nickel-base single crystal superalloy treated by ultrasonic shot peening.JOURNAL OF ALLOYS AND COMPOUNDS,919,16.
MLA	Li, Yifei,et al."Surface characteristics and microstructure evolution of a nickel-base single crystal superalloy treated by ultrasonic shot peening".JOURNAL OF ALLOYS AND COMPOUNDS 919(2022):16.