In this article, we study the strengthening effects of nanosecond laser shock processing (LSP) of a TC17 blade by simulations and experiments. A LSP model of the laser light impact on the TC17 blade is established based on ANSYS/LS-DYNA. We investigate residual stresses with different laser pulse durations along the direction of the blade surface and depth and discuss the influence of different overlap ratios on radial residual stresses, in view of numerical simulations. Further, we analyze the propagation characteristics of stress waves by selecting the 25 ns laser pulse duration and 50% overlap ratio. The strengthening performance of the laser light impact on the TC17 blade near the first-order bending node line is carried out by comparing the two-side simultaneous and separate LSP. Finally, we measure residual stresses along the surface direction of the TC17 blade basin and test the microhardness of the impact zone along the depth before and after LSP. Our results show that the LSP model is feasible and effective. In particular, before the impact depth reached 0.69 mm, the microhardness after LSP is significantly improved. The maximum microhardness in the impact zone is increased by 42HV_0.1 when selecting the two-side simultaneous LSP; as a result, a uniform compressive residual stress field is formed. This research provides an important technical reference for the LSP of the TC17 blade under study.

在本文中，我们通过仿真和实验研究了TC17刀片的纳秒激光冲击处理（LSP）的增强效果。基于ANSYS / LS-DYNA建立了激光对TC17叶片撞击的LSP模型。我们通过数值模拟研究了沿叶片表面和深度方向具有不同激光脉冲持续时间的残余应力，并讨论了不同重叠率对径向残余应力的影响。此外，我们通过选择25 ns的激光脉冲持续时间和50％的重叠率来分析应力波的传播特性。通过比较两侧同时分离的LSP，可以增强激光对一阶弯曲节点线附近的TC17刀片的冲击性能。最后，我们沿着TC17叶片池的表面方向测量残余应力，并测试LSP前后沿深度的冲击区的显微硬度。我们的结果表明，LSP模型是可行和有效的。特别地，在冲击深度达到0.69mm之前，LSP之后的显微硬度得到显着改善。冲击区的最大显微硬度提高了42HV选择两侧同时LSP时_为0.1；结果，形成了均匀的压缩残余应力场。该研究为所研究的TC17刀片的LSP提供了重要的技术参考。