钛合金板料激光冲击变形理论分析和实验研究

Theoretic and experimental study on deformation of TA2 Ti sheet metal by laser shock

为了研究不同的激光能量和不同的冲击路径、冲击次数对TA2钛合金板料变形的影响，借助于江苏大学研制的高功率Nd：glass激光冲击波装置，采用实验的方法，取得了不同条件下钛合金板料的变形数据。结果表明，随着激光能量的增加，板料的变形量增大；板料几何尺寸和厚度越大，板料越难变形；冲击区域的不平度，随前后光斑间隔的增大而增大，随光斑间隔的减小而减小。通过此类激光冲击实验可优化激光冲击的相关参数，预测板料变形。

For the sake of studying the effects on the sheet deformation under different laser energy, shock times and shock paths,in virtue of the high-power Nd：glass laser shock device developed by Jiangsu University, the deformation data of TA2 Ti sheet under different conditions has been obtained. The results indicate that the deformation of TA2 Ti sheet metal increases with the increase of the laser energy and with the increase of spots space and decreases with the sheet dimension and thickness. By way of such laser shock experiments, the correlative laser-shocking parameters could be optimized, the sheet deformation could be forecast.