| 丁字焊缝残余应力分布及振动消除应力的研究 |
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| 引用本文： | 李广铎,李科年.丁字焊缝残余应力分布及振动消除应力的研究[J].大连铁道学院学报,1991,12(2):66-70. |
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| 作者姓名： | 李广铎 李科年 |
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| 作者单位： | 大连铁道学院材料工艺系，大连铁道学院材料工艺系，大连起重机厂 |
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| 摘 要： | 本文采用 X 射线衍射法测定了丁字焊缝试板中的残余应力.根据大量的试验数据,找到了沿焊缝方向和垂直焊缝方向上,几个典型截面上的纵向和横向残余应力分布的一般规律;将丁字焊缝试板进行振动时效处理,再在原测点位置测定其残余应力的变化.试验结果发现,丁字焊缝试板上各测点的残余应力有所下降,其原始残余应力愈人,则下降率愈大,且应力分布趋于均匀化.
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| 关 键 词： | 焊缝 残余应力 分布规律 振动时效 |
A Distribution of Residual Stresses in T Weld and Its Vibration Stress-Relief |
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| Li Guangduo Qiu Hai Li Kenian.A Distribution of Residual Stresses in T Weld and Its Vibration Stress-Relief[J].Journal of Dalian Railway Institute,1991,12(2):66-70. |
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| Authors: | Li Guangduo Qiu Hai Li Kenian |
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| Institution: | Dept.of Matl.Techn. |
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| Abstract: | Residual stresses in a test plate with T weld is measurod by X-ray technique.According to a vast amount of test data,a general distribution law of longitudinal and transverse residual stresses on several typical sections is obtained.Then the test plate with T weld is treated by vibration stress-relief and residual stresses are measured again in order to discover a change of the residual stress distribution.The test results indicate that residual stresses in the test plate with T weld descend,the higher its original residual stresses are,the greater the descending rate is,and the stress distribution tends to homogenization. |
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| Keywords: | weld residual stress regularities of distribution X-ray diffraction analysis stress relief method/ vibration aging |
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