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Volume 27 Issue 4
Dec.  2013
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Citation:
shu

Experimental research of laser shock processing on aerial aluminum alloy

  • 1.

    Institute of High Power Laser, University of Science and Technology of China, Hefei, 230026

  • Received Date: 2002-10-03
    Accepted Date: 2002-11-26
  • After strengthening two states of 7050,one kind of aerial aluminum alloy,T7451 and T7452 with laser shock processing device developed by ourselves,the alloys' surface stress and structure are measured.Test results show that there is large residual compressive stress on the surface and internal dislocation density.However S-N curve in fatigue test shows that the fatigue strength in increased more than two times under the condition of moderate load strengthening.
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    [5] 刘锁.金属材料的疲劳性能与喷丸强化工艺.北京:国防工业出版社,1977.
    [6] 段志勇,王声波,吴鸿兴 et al.激光杂志,2000,21(2):30～34.
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    [8] 周建忠,周明,肖爱民 et al.应用激光,2002,22(1):7～9.
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Experimental research of laser shock processing on aerial aluminum alloy

  • 1. Institute of High Power Laser, University of Science and Technology of China, Hefei, 230026
  • Received Date: 2002-10-03
  • Accepted Date: 2002-11-26
  • Available Online: 2003-07-25

Abstract: After strengthening two states of 7050,one kind of aerial aluminum alloy,T7451 and T7452 with laser shock processing device developed by ourselves,the alloys' surface stress and structure are measured.Test results show that there is large residual compressive stress on the surface and internal dislocation density.However S-N curve in fatigue test shows that the fatigue strength in increased more than two times under the condition of moderate load strengthening.

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