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LY2铝合金激光冲击处理工艺 被引量:18

Laser shock peening for LY2 alloy
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摘要 为了提高LY2铝合金疲劳寿命,探索了用激光冲击强化方法处理LY2铝合金的技术。使用流水约束层和铝箔涂层,利用波长为532 nm,脉宽为10 ns,能量为5 J,光斑直径为3 mm的YAG激光器对LY2试样进行了激光冲击强化处理。结果表明:经激光冲击强化后LY2铝合金疲劳寿命提高1.1倍。对激光冲击强化后的试件断口分析结果表明激光冲击的强化作用抑制了裂纹在试件表层的萌生和扩展,从而提高了材料的疲劳寿命。 In order to study the effects of laser shock peening on the fatigue life of LY2 aluminum alloy,water and aluminum foil were used for confining medium and ablation medium,respectively.LY2 specimens were processed with YAG laser.The laser peening parameters were: wavelength of 532 nm,pulse duration of 10 ns,and output energy of 5 J.The laser was focused on a spot of diameter 3 mm.The experimental results show that laser shock peening can increase aluminum fatigue life by 110%.Fracture analysis results show that laser shock peening strengthens the metal surface and suppresses the crack's initiation and expansion,improving the aluminum fatigue performance.
出处 《强激光与粒子束》 EI CAS CSCD 北大核心 2010年第8期1780-1784,共5页 High Power Laser and Particle Beams
基金 国防科技基础研究基金项目(5132701)
关键词 激光技术 激光冲击强化 表面处理 疲劳寿命 冲击波 laser technique laser shock peening surface treatment fatigue life shock wave
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参考文献9

  • 1Gerland M,Hallouin M,Presles N.Comparison of two new surface treatment processes,laser induced shock waves and primary explosive:application to fatigue behavior[J].Mater Sci Eng,1992,A156:175-182.
  • 2Yang J M,Her Y C,Han N,et al.Laser shock peening on fatigue behavior of 2024-T6 Al alloy with fastener holes and stop holes[J].Mater Sci Eng,2001,A298:296-299.
  • 3Peyre P,Fabbro R.Laser shock processing:a review of the physics and applications[J].Opt Quant Electron,1995,27:1213-1229.
  • 4Fabbro R,Foumier J,Ballard P,et al.Physical study of laser-produced plasma in confined geometry[J].Appl Phys,1990,68:775-84.
  • 5王声波,范勇,吴鸿兴,郭大浩,戴宇生,夏小平.约束结构下激光冲击波特性实验研究[J].强激光与粒子束,2004,16(8):981-984. 被引量:18
  • 6Molian P,Molian R,Nair R.Laser shock wave consolidation of nanodiamond powders on aluminum 319[J].Appl Surf Sci,2009,255:3859-3867.
  • 7胡雅骥,陈彦初,陈冬.激光冲击强化技术在航空发动机叶片上的应用研究[J].燃气涡轮试验与研究,2009,22(3):54-56. 被引量:5
  • 8Zhang Xiancheng,Xu Binshi,Wang Haidou,et al.Effect of graded interlayer on the model edge delamination by residual stresses in multilayer coating-based system[J].Appl Surf Sci,2008,254(7):1881-1889.
  • 9张雪.疲劳短裂纹在残余应力场中的闭合和扩展[J].机械强度,2000,22(2):137-138. 被引量:4

二级参考文献21

  • 1张永康.激光冲击强化效果的直观判别与控制方法研究[J].中国激光,1997,24(5):467-471. 被引量:20
  • 2习年生,陶春虎.航空发动机叶片的断裂模式及预防[C]//航空发动机叶片故障及预防研讨会论文集.北京:航空工业出版社,2005.
  • 3Fairand B P,Wilcox B A,Gallaghtr W J,et al.Laser Shock Induced Mierostuetural and Mechanical Property Changes in 7075 Aluminum[J].J.Appl.Phys.,1972,43 (9):3893-3895.
  • 4Loomis E,Peralta P,Swift D,et al.Cross-sectional TEM Studies of Plastic Wave Attenuation in Shock Loaded NiAI[J].Materials Science and Engineering A,2006,437:212-221.
  • 5Cheng G J,Shehadeh M A.Multiscale Dislocation Dynamics Analyses of Laser Shock Peening in Silicon Single Crystals[J].International Journal of Plasticity,2006,22(12):71-94.
  • 6Sano Y,Obata M.Retardation of Crack Initiation and Growth in Austenitic Stainless Steels by Laser Peening without Protective Coating[J].Materials Science and Engineering A,2006,417(1-2):334-340.
  • 7Hatamleh O.Laser and Shot Peening Effects on Fatigue Crack Growth in Friction Stir Welded 7075-T7351 Aluminum Alloy Joints[J].International Journal of Fatigue,2007,29(3):421-434.
  • 8Zvorykin V D,Bakaev V G,Lebo I G,et al.Hydrodynamics of Plasma and Shock Waves Generated by the Highpower GARPUN KrF Laser[J].Laser and Particle Beams,2004,22(1):51-57.
  • 9Corsi M,Cristoforetti G,Giuffrida M,et al.Three-dimensional Analysis of Laser Induced Plasmas in Single and Double Pulse Configuration[J].Speetrochimiea Acta Part B,2004,59:723-735.
  • 10李应红,马壮,汪诚,等.航空部件激光冲击强化研究现状与展望[R].西安:空军工程大学,2007.

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