| X射线法测量淬火铝合金厚板表面残余应力 |
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| 引用本文： | 胡永会,吴运新,陈磊,郭俊康.X射线法测量淬火铝合金厚板表面残余应力[J].稀有金属快报,2011(2):51-55. |
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| 作者姓名： | 胡永会 吴运新 陈磊 郭俊康 |
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| 作者单位： | 中南大学机电工程学院; |
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| 基金项目： | 国家重点基础研究发展规划(973计划)资助(2005CB623708;2010CB731703) |
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| 摘 要： | 采用无损X射线衍射技术测试了7075铝合金厚板淬火后表面残余应力水平与分布,得到了淬火铝合金厚板表面残余应力的分布区间和一般规律,分析了准直管对测试结果的影响,并与中心钻孔法得到的结果做了比较。结果表明,两种方法都能有效并正确测量构件的表面残余应力,但中心钻孔法不适合用于应力梯度大的场合,而X射线法在无应力或原始应力水平很低的场合效果欠佳。淬火铝板表面残余应力的测试结果呈正态分布,且淬火过程中边缘局部有应力释放,释放值可达40%,且此区域大小约为铝板的一个厚度。
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| 关 键 词： | X射线衍射法 7075铝合金 残余应力 中心钻孔法 边缘效应 |
Experimental Measurement of Surface Residual Stresses of Quenched Aluminum Alloy Thick Plate by X-Ray Method |
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| HU Yonghui,WU Yunxin,CHEN Lei,GUO Junkang.Experimental Measurement of Surface Residual Stresses of Quenched Aluminum Alloy Thick Plate by X-Ray Method[J].Rare Metals Letters,2011(2):51-55. |
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| Authors: | HU Yonghui WU Yunxin CHEN Lei GUO Junkang |
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| Affiliation: | HU Yonghui,WU Yunxin,CHEN Lei,GUO Junkang (College of Mechanical and Electrical Engineering,Central South University,Changsha 410083,China) |
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| Abstract: | Surface residual stress distributions and general rules of quenched 7075 aluminum alloy thick plates were acquired by non-destructive X-ray diffraction method,in which effects of collimators were analyzed and the stress results were co MPared with measurements from center drilling method.The results show that both of the two surface stress measurement methods are effective and correct.But center drilling method is not suitable to conditions with large stress gradient while X-ray method is not effective in c... |
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| Keywords: | X-ray diffraction method 7075 aluminum alloy residual stress center drilling method edge effect |
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