| 对接焊铝合金板材残余应力的X射线测试 |
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| 引用本文： | 郑卜祥,宋永伦,席峰,张万春,闫志鸿.对接焊铝合金板材残余应力的X射线测试[J].机械工程学报,2009,45(3). |
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| 作者姓名： | 郑卜祥 宋永伦 席峰 张万春 闫志鸿 |
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| 作者单位： | 1. 北京工业大学机械工程与应用电子技术学院,北京,100124
2. 中国航天科技集团公司长征机械厂,万源,636371 |
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| 基金项目： | 国防科工委国防基础研究基金 |
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| 摘 要： | 用X射线衍射法对对接焊LD10铝合金板材表面残余应力进行测试试验,对比半高宽法和抛物线法,得出残余应力分布情况,并对其进行分析.分析结果表明两种定峰方法所得应力测定值较接近,且抛物线法所得应力分布曲线在大多数情况下处于半高宽法所得曲线下方,即抛物线法所得拉应力值偏低,压应力值偏高.同时,半高宽法较抛物线法对衍射峰的重复性、稳定性、适应性要好,应力测定的准确度较高,且采用X射线衍射法测量残余应力分布数据可靠,是一种有效的应力测试方法.这些结论对LD10铝合金板材的焊接残余应力分布具有参考意义.
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| 关 键 词： | 对接焊 铝合金 残余应力 X射线 测试 应力分布 |
Residual Stresses Measurement of Butt-welded Aluminium Alloy Plates by X-ray |
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| ZHENG Buxiang,SONG Yonglun,XI Feng,ZHANG Wanchun,YAN Zhihong.Residual Stresses Measurement of Butt-welded Aluminium Alloy Plates by X-ray[J].Chinese Journal of Mechanical Engineering,2009,45(3). |
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| Authors: | ZHENG Buxiang SONG Yonglun XI Feng ZHANG Wanchun YAN Zhihong |
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| Affiliation: | 1. College of Mechanical Engineering and Applied Electronics Technology;Beijing University of Technology;Beijing 100124;2. Changzheng Machinery Co.;China Aerospace Science and Technology Corporation;Wanyuan 636371 |
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| Abstract: | X-ray diffraction(XRD) method is used to determine the distribution of surface residual stress on the butt-welded aluminium alloy LD10 plates. Two methods of determining peak positions, i.e. half-width and parabola methods, are adopted and compared in the experiment, the distribution of residual stresses is obtained, and the distribution results of residual stresses are explained. The test shows that the results of the two methods are similar, and stress distribution curve of parabola method is largely lowe... |
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| Keywords: | Butt-welding Aluminium alloy Residual stress X-ray Measurement Stress distribution |
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