Chinese Optics Letters, 2011, 9 (6): 061406, Published Online: May. 13, 2011
Effects of processing parameters on fatigue properties of LY2 Al alloy subjected to laser shock processing 
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激光冲击强化 LY2铝合金 残余应力 疲劳寿命 140.3390 Laser materials processing 240.6690 Surface waves 350.3850 Materials processing
Abstract
We address the effects of processing parameters on residual stresses and fatigue properties of LY2 Al alloy by laser shock processing (LSP). Results show that compressive residual stresses are generated near the surface of samples due to LSP. The maximum compressive residual stress at the surface by two LSP impacts on one side is higher than that by one LSP impact. The maximum value of tensile residual stress is found at the mid-plane of samples subjected to two-sided LSP. Compared with fatigue lives of samples treated by single-sided LSP, lives of those treated by two-sided LSP are lower. However, these are higher than untreated ones.
Lei Zhang, Jinzhong Lu, Yongkang Zhang, Kaiyu Luo, Fengze Dai, Chengyun Cui, Xiaoming Qian, Junwei Zhong. Effects of processing parameters on fatigue properties of LY2 Al alloy subjected to laser shock processing[J]. Chinese Optics Letters, 2011, 9(6): 061406.
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