航空学报 > 1999, Vol. 20 Issue (1): 62-64

激光冲击处理对铝合金疲劳扩展速率影响的研究

张宏1, 余承业2   

  1. 1. 长春光学精密机械学院机械系激光加工实验室, 长春, 130022 ;2. 南京航空航天大学502 教研室, 南京, 210016
  • 收稿日期:1998-02-20 修回日期:1998-06-12 出版日期:1999-02-25 发布日期:1999-02-25

EFFECTS OF LASER SHOCK PROCESSING ON THE FATIGUE CRACK GROWTH RATES OF ALUMINIUM ALLOY

Zhang Hong1, Yu Chengye2   

  1. 1. Laser Processing laboratory, Department of Mechanical Engineering, Changchun Institute of Optics and Fine Mechanics, Changchun, 130022 ;2. Faculty 502, Nanjing University of Aeronautics and Astronautics, Na
  • Received:1998-02-20 Revised:1998-06-12 Online:1999-02-25 Published:1999-02-25

摘要:

研究了激光冲击处理对2024-T62铝合金疲劳裂纹扩展速率的影响,并探讨了将其作为止裂工艺的可行性。疲劳裂纹扩展试验结果表明:激光冲击处理可以显着地降低疲劳裂纹扩展速率,作为止裂工艺是可行的。

关键词: 激光冲击处理, 疲劳裂纹扩展, 止裂, 铝合金

Abstract:

This paper investigates the effects of laser shock processing (LSP) on the fatigue crack growth rates (FCGRs) of 2024 T62 aluminium alloy and the feasibility of LSP used as crack arrest technology. The fatigue crack growth test results show that the FCGRs of 2024 T62 aluminium alloy are retarded significantly after LSP, which reveals that arresting crack by LSP is pratical.

Key words: laser shock processing, fat igue cr ack growth, cra ck ar rest, aluminium alloy

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