Experimental investigation of laser shock peening on TC17 titanium alloy for Thin-wall Workpieces

CORC > 沈阳自动化研究所 > 中国科学院沈阳自动化研究所 > 装备制造技术研究室

	Experimental investigation of laser shock peening on TC17 titanium alloy for Thin-wall Workpieces
	Sun BY(孙博宇); Lu Y(陆莹); Zhao JB(赵吉宾); Qiao HC(乔红超)
	2018
会议日期	July 8-11, 2018
会议地点	Beijing, China
关键词	laser shock peening titanium alloy thickness microstructure residual stress micro-hardness surfacetopography acoustic impedance
页码	1-8
英文摘要	To study the performance and microstructure of TC17 thin-walled parts in shock wave and its reflection wave induced by laser, TC17 titanium alloy samples are processed using YAG laser with the wavelength of 1064 nm, pulse energy of 7J and pulse width of 15ns. Thus, its residual stress, microhardness and microstructure of overlapping shock with different thickness are obtained. The results show that with the thickness increasing, the front micro-hardness increases, and the reverse micro-hardness increases firstly and then decreases. The variation of residual stress with the thickness is consistent with the micro-hardness. The front residual stress maximum reaches -496.5MPa at the thickness of 5mm, and the reverse residual stress maximum reaches -171.1MPa at the thickness of 2mm. With the increase of thickness, the distribution of surface dislocations is more uniform, the grain refinement effect is more obvious, and the strengthening effect is the better. The causes of the variation of the double-sided residual stress field with the thickness are explained by theoretical analysis of the propagation and reflection of the shock wave in the material. The conclusions of this investigation have significance for the optimization of laser shock peening thin-wall workpieces.
产权排序	1
会议录	Proceedings Volume 10964, Tenth International Conference on Information Optics and Photonics
会议录出版者	SPIE
会议录出版地	Bellingham, USA
语种	英语
WOS记录号	WOS:000456505500097
内容类型	会议论文
源URL	[http://ir.sia.cn/handle/173321/23769]
专题	沈阳自动化研究所_装备制造技术研究室
通讯作者	Sun BY(孙博宇)
作者单位	Shenyang Institute of Automation, Chinese Academy of Science, Shenyang 110016, China
推荐引用方式 GB/T 7714	Sun BY,Lu Y,Zhao JB,et al. Experimental investigation of laser shock peening on TC17 titanium alloy for Thin-wall Workpieces[C]. 见:. Beijing, China. July 8-11, 2018.