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Volume 22 Issue 4
Sep.  2013
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Article Navigation >  LASER TECHNOLOGY  > 1998 >  22(4): 235-238

Citation:
shu

Effects of laser shocking on the mechanical properties of metals

  • 1.

    Machine Building Department, Jiangsu University of Science and Technology, Zhenjiang, 212013;

  • 2.

    Institute of Acoustics, Nanjing University, Nanjing, 210093

  • Received Date: 1997-04-18
    Accepted Date: 1997-06-04
  • The high power density,neodymium glass laser is used to laser shock process aluminum alloy 2024T62.Laser parameters:the duration(FWHM) is 30ns,the single laser pulse energy is 16.5 to 27.5J,the power density is 1.1 to 1.6GW/cm2.The test results show that the hardness of laser shocking zone is increased about 42%,the surface grains of laser shocking zone are fined and the fatigue life of aluminum alloy is increased significantly.With 95% confidence,the fatigue life of laser shock processing specimens is 5.4 to 14.5 times larger than the unprocessed specimens.
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  • [1]

    Vaccari J A.American M achinist,1992;(7):62~64
    [2]

    Kovaliuk B P,Nikiforov Y N,Yanuskevick V A.Fiaikai Khimiya-Obraotki Materialov,1993;(4):14~17
    [3] 王卫林.航空制造工程,1992;(12):21~23
    [4]

    Clauer A H,Fairand B P.Interaction of lase-rinduced stress waves with metals.In:Applications of Lasers in Materials processing.Ohio:Metals Park,1979:229~253
    [5]

    Clauer A H,Holbrook J H,Fairand B P.Effects of laser induced shock waves on metals.In:Shock Waves and High St rain Rate Phenomena in M et als.New York:Plenum Press,1981:675~702
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  • 1. 

    沈阳化工大学材料科学与工程学院 沈阳 110142

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Effects of laser shocking on the mechanical properties of metals

  • 1. Machine Building Department, Jiangsu University of Science and Technology, Zhenjiang, 212013;
  • 2. Institute of Acoustics, Nanjing University, Nanjing, 210093
  • Received Date: 1997-04-18
  • Accepted Date: 1997-06-04
  • Available Online: 1998-07-25

Abstract: The high power density,neodymium glass laser is used to laser shock process aluminum alloy 2024T62.Laser parameters:the duration(FWHM) is 30ns,the single laser pulse energy is 16.5 to 27.5J,the power density is 1.1 to 1.6GW/cm2.The test results show that the hardness of laser shocking zone is increased about 42%,the surface grains of laser shocking zone are fined and the fatigue life of aluminum alloy is increased significantly.With 95% confidence,the fatigue life of laser shock processing specimens is 5.4 to 14.5 times larger than the unprocessed specimens.

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