Laser peening of aluminum alloy 7050 with fastener holes
Laser peening of aluminum alloy 7050 with fastener holes
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DOI：
10.3788/col20080602.0116
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发表时间：
2008-02
影响因子：
3.5
通讯作者：
S. Zou;Ziwen Cao;Yong Zhao;M. Qian
中科院分区：
文献类型：
--
作者：
S. Zou;Ziwen Cao;Yong Zhao;M. Qian
研究了带紧固孔的7050铝合金激光喷丸试件的疲劳性能。对冲击影响区的表面轮廓和残余应力进行了表征。然后，对有缺口的疲劳试件进行激光喷丸处理，测量了激光喷丸处理后的疲劳寿命，并与未喷丸的母材进行了比较。结果表明，LP提高了所有试件的疲劳寿命。钻孔前进行LP处理的试件的平均疲劳寿命比未处理的试件提高173%，且效果优于钻孔后进行LP处理的试件。
The fatigue properties of laser peened aluminum alloy 7050 specimens with fastener holes were investigated. The surface profile and residual stress induced in the shock affected zone were characterized. Then, the fatigue specimens with notch were treated by laser peening (LP), and the fatigue lifes of LP-treated specimens were measured and compared with base materials without LP. The results indicated that LP improved the fatigue lifes of all tested specimens. The average fatigue lifes of specimens treated by LP before hole-drilling were 173% longer than those of untreated samples and had better effects than those specimens treated by LP after hole-drilling.