Effect of Warm Laser Shock Peening on Microstructure and Properties of GH4169 Superalloy

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	Effect of Warm Laser Shock Peening on Microstructure and Properties of GH4169 Superalloy
	Wu JJ(吴嘉俊)3,4 ; Li, Songxia 1; Hu TY(胡太友)3,4; Sun BY(孙博宇)3; Qiao HC(乔红超)3 ; Lu Y(陆莹)3
	2018
会议日期	May 25, 2018 - May 27, 2018
会议地点	Nanchang, China
页码	1-7
英文摘要	In order to explore the effect of warm laser shock peening (WLSP) on the GH4169 superalloy, the microhardness, residual stress, and microstructure of the samples are compared and analyzed by laser shock peening (LSP) at 24 °C and WLSP at 200 °C, 250 °C, and 300 °C. The results show that the microhardness level and hardened layer thickness increase gradually with the increase of process temperature. Compared with LSP (24 °C), WLSP (300 °C) increased the maximum microhardness of the sample by 13.0% and the depth of hardened layer increased by 25.0%; The influence of process temperature has little effect on the residual stress level, and the residual stress difference of the samples after LSP (24 °C) and WLSP (200 °C, 250 °C, 300 °C) are within 40MPa; Compared with the microstructure of the original sample, the dislocation density of the samples after LSP and WLSP increased significantly, compared with LSP (24 °C), the number of slip line projections after WLSP (300 °C) is more, the size is larger, and there are a lot of dislocations tangled around the precipitates. This study shows that WLSP has a better strengthening effect than LSP. © 2018 Institute of Physics Publishing. All rights reserved.
产权排序	1
会议录	2018 4th International Conference on Applied Materials and Manufacturing Technology, ICAMMT 2018
会议录出版者	IOP
会议录出版地	Bristol, UK
语种	英语
ISSN号	1757-8981
内容类型	会议论文
源URL	[http://ir.sia.cn/handle/173321/23653]
专题	沈阳自动化研究所_装备制造技术研究室
通讯作者	Qiao HC(乔红超)
作者单位	1.University of Chinese Academy of Sciences, Beijing 100049, China 2.Northeastern University, Shenyang, Liaoning 110004, China 3.Shenyang Institute of Automation Chinese Academy of Sciences, Shenyang, Liaoning 4.110016, China
推荐引用方式 GB/T 7714	Wu JJ,Li, Songxia,Hu TY,et al. Effect of Warm Laser Shock Peening on Microstructure and Properties of GH4169 Superalloy[C]. 见:. Nanchang, China. May 25, 2018 - May 27, 2018.