| 1420铝锂合金动态低应力无变形焊接技术 |
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| 引用本文： | 刘颖,郭德伦,佀好学.1420铝锂合金动态低应力无变形焊接技术[J].焊接学报,2008,29(3):113-116. |
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| 作者姓名： | 刘颖 郭德伦 佀好学 |
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| 作者单位： | 北京航空制造工程研究所,航空连接技术重点实验室,北京,100024 |
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| 摘 要： | 针对1420铝锂合金平板对接和T形穿透焊接结构,开展了动态低应力无变形(DC-LSND,dynamically controlled low stress non-deformation)焊接技术的可行性研究;通过与常规TIG焊进行焊接应力和变形、接头组织以及拉伸性能的对比,分析了该技术实现应力和变形控制的原因.结果表明,采用动态低应力无变形焊接1420铝锂合金平板对接结构,能够有效地减小焊接应力和变形,并且对接头的拉伸性能没有影响,同时采用该技术可实现铝锂合金T形接头穿透焊的应力和变形的控制.
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| 关 键 词： | 1420铝锂合金 动态低应力 焊接应力和变形 |
| 文章编号： | 0253-360X（2008）03-0113-04 |
| 收稿时间： | 2007-11-11 |
| 修稿时间： | 2007年11月11 |
DC-LSND welding technique of 1420 Al-Li alloy |
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| LIU Ying,GUO Delun and SI Haoxue.DC-LSND welding technique of 1420 Al-Li alloy[J].Transactions of The China Welding Institution,2008,29(3):113-116. |
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| Authors: | LIU Ying GUO Delun and SI Haoxue |
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| Affiliation: | Beijing Aeronautical Manufacturing Technology Research Institute, Beijing 100024, China,Beijing Aeronautical Manufacturing Technology Research Institute, Beijing 100024, China and Beijing Aeronautical Manufacturing Technology Research Institute, Beijing 100024, China |
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| Abstract: | The applications of DC-LSND (dynamically controlled low stress non-deformation)welding technique on 1420 Al-Li alloy butt welded plate and penetrated T-weld were investigated respectively.By comparison of residual stress and distortion, weld microstructure and tensile properties between conventional TIG welding and DC-LSND welding, the reason why DC-LSND technique can control welding stress and distortion was discussed.The results showed that DC-LSND technique could effectively decrease residual stress and distortion of the 1420 Al-Li alloy butt welded plate, while hadn'' t apparent effect on the joint tensile properties.The welding stress and distortion of 1420 Al-Li alloy penetrated T-weld could also be controlled. |
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| Keywords: | 1420 Al-Li alloy dynamically controlled low stress non-deformation welding welding stress and distortion |
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