| 镀锌钢一6016铝合金异种金属加入中间夹层铅的激光焊接 |
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| 引用本文： | 彭利,周惦武,吴平,张屹,陈根余.镀锌钢一6016铝合金异种金属加入中间夹层铅的激光焊接[J].焊接学报,2011(12):81-84. |
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| 作者姓名： | 彭利 周惦武 吴平 张屹 陈根余 |
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| 作者单位： | 湖南大学汽车车身先进设计制造国家重点实验室, 长沙 410082,湖南大学汽车车身先进设计制造国家重点实验室, 长沙 410082,湖南大学汽车车身先进设计制造国家重点实验室, 长沙 410082,湖南大学汽车车身先进设计制造国家重点实验室, 长沙 410082,湖南大学汽车车身先进设计制造国家重点实验室, 长沙 410082 |
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| 基金项目： | 国家863高技术研究发展计划资助项目(2007AA042006);国家自然科学基金资助项目(50805045);湖南大学汽车车身先进设计制造国家重点实验室自主课题资助项目(71075003) |
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| 摘 要： | 对1．2mm厚镀锌钢板和1．15mm厚6016铝合金平板试件进行了加入中间夹层铅的激光搭接焊试验，通过调整焊接工艺参数获得最佳焊接成形，利用卧式金相显微镜、扫描电镜、x射线衍射、微机控制电子万能试验机等手段研究了焊接接头各区域的金相组织、断口形貌、主要物相与接头力学性能．结果表明，在钢／铝激光焊中添加中间夹层铅，焊接接...
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| 关 键 词： | 激光焊接 异种金属 金属间化合物 微观组织 |
| 收稿时间： | 2010/12/5 0:00:00 |
Laser lap welding of zinc-coated steel and 6016 aluminum alloy with Pb interlayer |
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| PENG Li,ZHOU Dianwu,WU Ping,ZHANG Yi and CHEN Genyu.Laser lap welding of zinc-coated steel and 6016 aluminum alloy with Pb interlayer[J].Transactions of The China Welding Institution,2011(12):81-84. |
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| Authors: | PENG Li ZHOU Dianwu WU Ping ZHANG Yi and CHEN Genyu |
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| Affiliation: | State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha 410082, China,State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha 410082, China,State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha 410082, China,State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha 410082, China and State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha 410082, China |
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| Abstract: | The laser lap welding experiment with the Pb interlayer was carried out based on the DC56D + ZF galvanized steel of 1.2 mm and the 6016 aluminum alloy of 1.15 mm. The best appearance of welding were obtained by adjusting the welding parameters. By using optical microscopy, scanning electron microscopy, X-ray diffraction and the tensile test, mechanical properties of joints, fracture morphology and the main phase of the welded joint regional was studied. The results showed that when Pb interlayer was added in steel/aluminum, the average tensile strength and elongation of the steel/aluminum laser welding joints were 68.51 MPa and 2.37% respectively. Compared with that without Pb interlayer, the strength and alongation were improved significantly. The element distribution, phase composition and microstructure of the steel/aluminum interface were changed by the addtion of Pb interlayer. In the transition region of steel/aluminum joints, Fe, Al, Zn, Mg, Pb elements of the mixing zone width was larger, and a new ductile intermetallic compounds-Mg2Pb was produced, which could improve the mechanical properties of weld metal. |
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| Keywords: | laser welding dissimilar metal intermetallic compounds microstructure |
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