窦世涛,张津,郑林,等.激光冲击能量对3D打印铝合金表面残余应力和形貌的影响[J].精密成形工程,2023,15(6):55-61.
DOU Shi-tao,ZHANG Jin,ZHENG Lin,et al.Effect of Laser Shock Energy on Residual Stress and Surface Morphology of 3D Printed Aluminum Alloy[J].Journal of Netshape Forming Engineering,2023,15(6):55-61. |
| 激光冲击能量对3D打印铝合金表面残余应力和形貌的影响 |
| Effect of Laser Shock Energy on Residual Stress and Surface Morphology of 3D Printed Aluminum Alloy |
| |
| DOI：10.3969/j.issn.1674-6457.2023.06.007 |
| 中文关键词: 3D打印 激光冲击强化 残余应力 表面形貌 无损检测 |
| 英文关键词: 3D print laser shock peening residual stress surface morphology non-destructive testing |
| 基金项目: |
|
| 摘要点击次数: 2117 |
| 全文下载次数: 871 |
| 中文摘要: |
| 目的 对不同激光冲击强化工艺条件下的3D打印铝合金样品的残余应力和表面形貌进行测试分析，评估不同激光冲击能量对3D打印铝合金表面残余应力和表面形貌的影响。方法 利用X射线应力仪和白光干涉三维显微镜进行3D打印铝合金样品表面残余压应力和表面形貌的测试分析。结果 当冲击能量为15 J时，3D打印铝合金样品表面残余应力最大为−89 MPa，当冲击能量为30 J时，3D打印铝合金样品表面残余应力最大为−129 MPa。激光冲击区域表面粗糙度由母材的约1.2 μm增加至约3 μm，搭接区域存在凸起。结论 激光冲击能量增加，表面塑性变形增大。冲击能量为30 J的3D打印铝合金样品表面残余压应力约为冲击能量为15 J的1.5倍，提高冲击能量可有效提高表面压应力。 |
| 英文摘要: |
| The work aims to test and analyze the residual stress and surface morphology of 3D printed aluminum alloy samples under various laser shock peening procedures and evaluate the effect of various laser shock energy on the surface residual stress and morphology of 3D printed aluminum alloy. The residual compressive stress and surface morphology of 3D printed aluminum alloy samples were tested and analyzed by X-ray residual stress analyzer and white light interference 3D microscope. The maximum surface residual stresses of 3D printed aluminum alloy samples were −89 MPa under a shock energy of 15 J and −129 MPa under a shock energy of 30 J. The surface roughness of laser shock area increased from about 1.2 μm to about 3 μm in comparison to that of base material, and there were protrusions in the lap area. The amount of laser shock energy grows together with the surface plastic deformation. A 3D printed aluminum alloy sample under a shock energy of 30 J has a surface residual compressive stress that is around 1.5 times that of a sample under a shock energy of 15 J. The surface compressive stress can be successfully increased by increasing the shock energy. |
|
查看全文
查看/发表评论 下载PDF阅读器 |
| 关闭 |
渝公网安备 50010702501719号