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用高重复率钕玻璃激光器,对QT700-2进行了激光冲击强化处理,利用X-350A残余应力测试仪对QT700-2激光冲击强化区残余应力进行了测试,结果显示经激光冲击处理后试件表面具有较高的残余压应力,可达-200Mpa以上;分析了表面残余应力及沿层深方向残余应力的分布情况。对激光冲击强化处理技术的实际工程应用具有指导性意义。
Using high repetition rate neodymium glass laser, QT700-2 laser shock strengthening treatment, using the X-350A residual stress tester QT700-2 laser shock enhancement zone residual stress test results show that after the laser shock treatment specimen The surface has a higher residual compressive stress, up to -200Mpa above; analysis of the surface residual stress and distribution along the depth direction of the residual stress. The practical application of laser shock treatment technology has guiding significance.