A study on the surface morphology evolution of the GH4619 using warm laser shock peening

CORC > 沈阳自动化研究所 > 中国科学院沈阳自动化研究所 > 工艺装备与智能机器人研究室

	A study on the surface morphology evolution of the GH4619 using warm laser shock peening
	Lu Y(陆莹); Zhao JB(赵吉宾); Qiao HC(乔红超); Wu JJ(吴嘉俊); Sun BY(孙博宇); Hu TY(胡太友)
刊名	AIP ADVANCES
	2019
卷号	9 期号:8 页码:1-7
ISSN号	2158-3226
通讯作者	Zhao, Jibin(jbzhao@sia.cn)
产权排序	1
英文摘要	Compared with the laser shock peening, the warm laser shock peening has been demonstrated to get a stable compressive stress distribution under heating and cyclic loading, which is mainly due to warm laser shock peening combined with the advantages of laser shock peening and dynamic strain aging. The surface morphology evaluation of warm laser shock peening was investigated systematically in this work, the GH4169 nickel-base super-alloy is selected as the material with which to conduct experiments of laser shock peening and warm laser shock peening. It can be found that there are a lot of surface ripples appearing after the treatment of warm laser shock peening, which is different from the surface reliefs by the treatment of laser shock peening. Under high temperature and strain rate, delta phase transformed into gamma '' phase. Simultaneously, compared with the delta phase of the larger grain size, the grain size of gamma '' phase is much smaller, and is unable to form the surface relief. Warm laser shock peening produced a higher dislocation density and more stabilized dislocations that are pinned by the Cottrell Clouds formed by gamma '' phase, which can inhibit the residual stress failure at the high temperature-alternating load.
资助项目	NSFC-Liaoning Province united foundation[U1608259]
WOS关键词	RESIDUAL-STRESS ; FATIGUE BEHAVIOR ; MICROSTRUCTURE ; ALLOY
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Physics
语种	英语
WOS记录号	WOS:000483883400002
资助机构	NSFC-Liaoning Province united foundation [U1608259]
内容类型	期刊论文
源URL	[http://ir.sia.cn/handle/173321/25621]
专题	工艺装备与智能机器人研究室
通讯作者	Zhao JB(赵吉宾)
作者单位	Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110016, Liaoning, China
推荐引用方式 GB/T 7714	Lu Y,Zhao JB,Qiao HC,et al. A study on the surface morphology evolution of the GH4619 using warm laser shock peening[J]. AIP ADVANCES,2019,9(8):1-7.
APA	Lu Y,Zhao JB,Qiao HC,Wu JJ,Sun BY,&Hu TY.(2019).A study on the surface morphology evolution of the GH4619 using warm laser shock peening.AIP ADVANCES,9(8),1-7.
MLA	Lu Y,et al."A study on the surface morphology evolution of the GH4619 using warm laser shock peening".AIP ADVANCES 9.8(2019):1-7.