| Laser Shock Peening of Aluminum Alloy 7050 for Fatigue Life Improvement |
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Laser Shock Peening of Aluminum Alloy 7050 for Fatigue Life Improvement |
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| Authors: | Qian Ming Lian Ying Zou Shikun Gong Shuili |
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| Abstract: | The effects of laser shock peening (LSP) on improving fatigue life of aluminum alloy 7050 are investigated.Surface hardness is increased corresponding to a high dislocation density induced by LSP.The X-ray diffraction stress measurement shows that LSP results in prominent increase of surface compressive stress,quasi-symmetrically distributed in the laser peened region.The fatigue life of the alloy 7050 in rivet fastener hole structure is notably improved owing to LSP.The sequence of LSP and fastener hole preparation also influence the fatigue cycle life of the alloy. |
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| Keywords: | Laser shock peening Dislocation Compressive stress Fatigue life Aluminum |
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