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<p>As an advanced surface treatment method, laser shock peening technology has shown remarkable results in improving the service performance of aluminum alloy materials in recent years. In this paper, finite element simulation is used to calculate the influence of different laser process parameters (spot lap rate, laser energy, spot diameter) on the material strengthening effect, and the following three sets of laser process parameters are selected to perform laser impact shot peening on the surface of ZL101A aluminum alloy round bar specimens: LSP-1 (spot lap ratio 0.5, laser energy 2&#xa0;J, spot diameter 3&#xa0;mm); LSP-2 (spot lap 0.5, laser energy 2&#xa0;J, spot diameter 2.6&#xa0;mm); LSP-3 (spot lap 0.5, laser energy 2.6&#xa0;J, spot diameter 3&#xa0;mm). After strengthening with the LSP-1 parameter, the residual stress values induced are lower than LSP-2 and LSP-3. X-ray diffraction (XRD), electron backscatter diffraction (EBSD), scanning electron microscopy (SEM), and rotational flexural fatigue testing machine were used to study the residual stress, microstructure, fatigue life, and fracture morphology of the strengthened specimens. XRD experiments show that the residual compressive stress of LSP-1 specimen is the highest. The rotational flexural fatigue test shows that the life of the LSP-1 specimen is the longest. EBSD analysis showed that the surface grain refinement effect of LSP-1 specimen was the best. The improvement in the performance of ZL101A material is most significant when the laser process parameter is LSP-1.</p>

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Study on the Effect of Laser Impact Strengthening on the Service Performance of ZL101A Aluminum Alloy

  • 期刊论文

  • 发表日期：

    2025年10月31日

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  • Yutian Wang,
  • Xiangyu Ding,
  • Shutong Yu,
  • Shengchao Wang,
  • Zheng Wu,
  • Yunfei Yuan,
  • Cheng Wang

摘要

As an advanced surface treatment method, laser shock peening technology has shown remarkable results in improving the service performance of aluminum alloy materials in recent years. In this paper, finite element simulation is used to calculate the influence of different laser process parameters (spot lap rate, laser energy, spot diameter) on the material strengthening effect, and the following three sets of laser process parameters are selected to perform laser impact shot peening on the surface of ZL101A aluminum alloy round bar specimens: LSP-1 (spot lap ratio 0.5, laser energy 2 J, spot diameter 3 mm); LSP-2 (spot lap 0.5, laser energy 2 J, spot diameter 2.6 mm); LSP-3 (spot lap 0.5, laser energy 2.6 J, spot diameter 3 mm). After strengthening with the LSP-1 parameter, the residual stress values induced are lower than LSP-2 and LSP-3. X-ray diffraction (XRD), electron backscatter diffraction (EBSD), scanning electron microscopy (SEM), and rotational flexural fatigue testing machine were used to study the residual stress, microstructure, fatigue life, and fracture morphology of the strengthened specimens. XRD experiments show that the residual compressive stress of LSP-1 specimen is the highest. The rotational flexural fatigue test shows that the life of the LSP-1 specimen is the longest. EBSD analysis showed that the surface grain refinement effect of LSP-1 specimen was the best. The improvement in the performance of ZL101A material is most significant when the laser process parameter is LSP-1.