| GH742合金激光冲击强化后的表面残余应力 |
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| 引用本文： | 王学德,周鑫,王路成,杨磊,楚峰.GH742合金激光冲击强化后的表面残余应力[J].机械工程材料,2012(3):79-80,88. |
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| 作者姓名： | 王学德 周鑫 王路成 杨磊 楚峰 |
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| 作者单位： | 空军工程大学等离子体动力学重点实验室;93717部队;94243部队87分队;空军工程大学工程学院研管十一队 |
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| 基金项目： | 国防预研基金资助项目(513270103) |
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| 摘 要： | 采用X射线衍射法对GH742合金激光冲击强化后的表面残余应力进行了测试,采用云纹干涉结合盲孔法对残余应力随深度的分布进行了测试。结果表明:GH742合金经激光单点冲击后,表面残余压应力最高可达1 180MPa,且残余压应力层深度达到1.2mm;50%光斑搭接率强化后的表面残余压应力约为1 100MPa。
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| 关 键 词： | 激光冲击强化 残余压应力 GH742合金 |
Surface Residual Stress of GH742 Alloy after Laser Shock Processing |
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| WANG Xue-de,ZHOU Xin,WANG Lu-cheng,YANG Lei,CHU Feng.Surface Residual Stress of GH742 Alloy after Laser Shock Processing[J].Materials For Mechanical Engineering,2012(3):79-80,88. |
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| Authors: | WANG Xue-de ZHOU Xin WANG Lu-cheng YANG Lei CHU Feng |
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| Affiliation: | 1.Aero-Plasma Dynamics Lab,Air Force Engineering University,Xi′an 710038,China; 2.93717 Military Unit,Gaocheng 052160,China;3.No.87 Gruppe of 94243 Military Unit,Zhucheng 262200,China; 4.Graduate Company 11 Engineering College Air Force Engineering University,Xi′an 710038,China) |
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| Abstract: | X-ray diffraction method was used to test the surface residual stress of laser shock processed GH742 alloy,and the residual stress distribution along depth was measured by moire interferometry and blind hole method.The results show that the surface residual compressive stress of GH742 alloy was as high as 1 180 MPa after laser shock processing with one laser pluse,and the depth of residual compressive stress layer was 1.2 mm.The surface residual compressive stress was about 1 100 Mpa after strengthening with 50% spot lapping rate. |
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| Keywords: | laser shock processing residual compressive stress GH742 alloy |
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