Effects of Laser Peening Parameters on Plastic Deformation in Stainless Steel
Effects of Laser Peening Parameters on Plastic Deformation in Stainless Steel
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DOI：
10.2961/jlmn.2016.02.0013
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发表时间：
2016-07-01
影响因子：
1.1
通讯作者：
Nakano, Hitoshi
中科院分区：
文献类型：
--
作者：
Tsuyama, Miho;Kodama, Yasuteru;Nakano, Hitoshi
激光喷丸是一种利用激光冲击波产生塑性变形来提高金属材料力学性能的表面处理技术。目前对激光喷丸强化的研究主要集中在残余压应力的大小和强化后材料的硬度。为了提高激光喷丸技术的效率，需要对影响激光喷丸的许多参数进行系统的研究。在这项研究中，三个因素与激光喷丸的定义和参数，这些因素进行了鉴定。阐述了这些激光喷丸参数对不锈钢塑性变形的影响。在激光喷丸实验中，改变激光强度、覆盖范围（每单位面积的激光脉冲数）、焦斑直径和材料条件参数。根据实验结果，研究了不锈钢高效激光喷丸的工艺参数。
Laser peening is a surface treatment technique that improves the mechanical performance of metals by producing plastic deformation with a laser-induced shock wave. Current studies on laser peening mainly focus on the magnitude of the compressive residual stress and the hardness of the laser-peened material. Systematic studies on the many parameters that affect laser peening are required to increase the efficiency of the technique. In this study, three factors associated with laser peening are defined and the parameters that govern these factors are identified. The effects of these laser peening parameters on the plastic deformation of stainless steel are described. The laser intensity, coverage (number of laser pulses per unit area), focal spot diameter, and material condition parameters were varied in laser peening experiments. The parameters desirable for efficient laser peening of stainless steel were examined on the basis of the experimental results.