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Mechanical Properties and Microstructure of Bionic Non-Smooth stainless steel Surface by Laser Multiple Processing

Journal of Bionic Engineering 2009年第2期6卷 180-185页

作者： Jin-zhong Lu~(1,2) ,Chao-jun Yang~(1,2) ,Lei Zhang~(1,2),Ai-xin Feng ~(1,2) ,Yin-fang Jiang~(1,2)1.School of Mechanical Engineering,Jiangsu University,Zhenjiang 212013,P.R.China2.Jiangsu Provincial Key Laboratory for Science and Technology of Photon Manufacturing,Zhenjiang 212013,P.R.China School of Mechanical Engineering Jiangsu University Zhenjiang P. R. China Jiangsu Provincial Key Laboratory for Science and Technology of Photon Manufacturing Zhenjiang P. R. China

Laser multiple processing, i.e. laser surface texturing and then Laser Shock Processing (LSP), is a new surface processing technology for the preparation of bionic non-smooth surfaces. Based on engineering bionics, samples of bionic non-smooth surfaces of stainless steel 0crl 8ni9 were manufactured in the form of reseau structure by laser multiple processing. The mechanical properties (including microhardness, residual stress, surface roughness) and microstructure of the samples treated by laser multiple processing were compared with those of the samples without LSP The results show that the mechanical properties of these samples by laser multiple processing were clearly improved in comparison with those of the samples without LSP The mechanisms underlying the improved surface microhardness and surface residual stress were analyzed, and the relations between hardness, comnressive residual stress and roughness were also presented.

关键词： laser multiple processing laser surface texturing laser shock processing stainless steel 0cr18ni9 microhardness residual stress roughness

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