Welding Characteristic Analysis of Hybrid Welding on 2014 Aluminum Alloy

文献类型： 外文期刊

第一作者： Gao, Zongyu

作者： Gao, Zongyu;Fang, Jianjun;Zhang, Yinong;Zhang, Shide;Gao, Zongyu;Ran, Guowei

作者机构：

关键词： aluminum alloy;hybrid welding;joint properties

期刊名称：INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE （ 影响因子：1.765； 五年影响因子：1.685 ）

ISSN： 1452-3981

年卷期： 2013 年 8 卷 6 期

页码：

收录情况： SCI

摘要： The experiment of TIG arc and laser high-frequency pulse TIG hybrid welding for 2014 aluminum alloy with the thickness of 7mm were carried out. Through the two welding processes experiments, the correlation between welding process and joints structure as well as performance was studied. The result show that compared with the TIG welding, laser-assisted TIG compound welding and laser high-frequency pulse TIG compound welding increase welding speed, reduce heat input significantly, refine the welding structure, and reduce the width of Eutectic alpha(Al)+theta (CuAl2) structure of crystal boundary, especially effectively eliminate the blowhole defect of welding fusion zone, Furthermore, the joint properties and stress corrosion resistance both are improved significantly. The average fracture time for 2014 aluminum alloy through the laser high-frequency pulse TIG hybrid welding is significantly longer than that through the TIG welding, which is about 93% of the average fracture time for 2014 base material.

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