Journal ArticleDOI
Laser shock processing and its effects on microstructure and properties of metal alloys: a review
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In this paper, the current status of research and development on laser shock processing of metals, also known as laser peening, using Q-switched high power lasers is reviewed and the influence of processing parameters on the laser-induced shock waves in metal components are discussed and analyzed.About:
This article is published in International Journal of Fatigue.The article was published on 2002-10-01. It has received 933 citations till now. The article focuses on the topics: Laser peening & Peening.read more
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On the influence of mechanical surface treatments—deep rolling and laser shock peening—on the fatigue behavior of Ti–6Al–4V at ambient and elevated temperatures
TL;DR: In this paper, the effect of DR on the low-cycle fatigue (LCF) and high cycle fatigue (HCF) behavior of a Ti-6Al-4V alloy is examined, with particular emphasis on the thermal and mechanical stability of the residual stress states and the near-surface microstructures.
Journal ArticleDOI
Grain refinement mechanism of multiple laser shock processing impacts on ANSI 304 stainless steel
Jin Zhon Lu,Kaiyu Luo,Yong Kang Zhang,Sun Guifang,Y.Y. Gu,Jianzhong Zhou,Xu Dong Ren,Xian-Cheng Zhang,Ling Feng Zhang,K.M. Chen,C.Y. Cui,Y.F. Jiang,A.X. Feng,Lai-Chang Zhang +13 more
TL;DR: In this article, the micro-structural evolution and grain refinement in ANSI 304 stainless steel subjected to multiple laser shock processing (LSP) impacts were investigated by means of cross-sectional optical microscopy and transmission electron microscopy observations.
Journal ArticleDOI
Grain refinement of LY2 aluminum alloy induced by ultra-high plastic strain during multiple laser shock processing impacts
J.Z. Lu,Kaiyu Luo,Y.K. Zhang,C.Y. Cui,Sun Guifang,Jun Zhou,Lai-Chang Zhang,J. You,K.M. Chen,J.W. Zhong +9 more
TL;DR: In this article, the plastic deformation behavior and the effects of the impact time on the LY2 aluminum (Al) alloy during multiple laser shock processing (LSP) impacts were investigated.
Journal ArticleDOI
Retardation of crack initiation and growth in austenitic stainless steels by laser peening without protective coating
TL;DR: In this paper, laser peening without protective coating (LPPC) has been applied to water-immersed SUS304 (Type 304) and SUS316L (Type 316L) austenitic stainless steels.
Journal ArticleDOI
Laser Peening Process and Its Impact on Materials Properties in Comparison with Shot Peening and Ultrasonic Impact Peening
TL;DR: The laser shock peening (LSP) process using a Q-switched pulsed laser beam for surface modification has been reviewed and enhancements in the surface micro and nanohardness, elastic modulus, tensile yield strength and refinement of microstructure which translates to increased fatigue life and fretting fatigue life, stress corrosion cracking (SCC) and corrosion resistance were addressed.
References
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Physical study of laser-produced plasma in confined geometry
TL;DR: In this article, the authors studied the physical processes involved in laser-produced plasma in confined geometry, and showed that a large fraction of the absorbed laser energy (80% to 90%) is used for the ionization of the medium in these conditions of irradiation.
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Shock Waves and High-Strain-Rate Phenomena in Metals
TL;DR: The proceedings of EXPLOMET 90, the International Conference on the Materials Effects of Shock-Wave and High-Strain-Rate Phenomena, held August 1990, in La Jolla, California, represent a global and up-to-date appraisal of this field as discussed by the authors.
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Laser shock processing of aluminium alloys. Application to high cycle fatigue behaviour
TL;DR: In this article, the role of laser shock processing (LSP) on the cyclic properties of A356, Al12Si and 7075 aluminium alloys was evaluated, and major contributors to the fatigue performance improvements were investigated in order to determine the optimum shock conditions.
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Shock waves from a water-confined laser-generated plasma
TL;DR: In this paper, the generation of a high amplitude shock wave by laser plasma in a water confinement regime was investigated for an incident 25-30 ns/40 J/λ=1.064μm pulsed laser beam.
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Physics and applications of laser-shock processing
TL;DR: In this paper, a review of the main process parameters controlling pressure generation in a confined mode is presented, including laser intensity, target material, laser pulse duration, and laser wavelength.