摘要
依据某型号的铝合金焊接构件对焊后表面的高平面度要求,自主研制活性剂,实现2A14铝合金的直流ATIG焊接.并通过直流A-TIG焊缝的表面成形、X射线、微观组织观察及力学性能等方面开展2A14铝合金直流ATIG焊接技术研究.结果表明,当活性剂浓度为15%时可以获得表面成形、内部质量及力学性能良好的2A14铝合金直流A-TIG焊缝;与交流TIG焊相比,焊缝力学性能略高,微观气孔数量明显降低.
According to the high flatness requirement of a specific aluminum component,the direct current activating TIG welding(DC A-TIG)has been realized by using a selfdeveloped activating flux.The appearance,internal qualities,microstructures and mechanical properties of the DC A-TIG welds have been studied.The results indicate that when the activating flux concentration is 15%,a 2A14 DC A-TIG weld with good appearance,internal quality and mechanical property can be obtained.Comparing to the alternating current TIG(AC TIG)welds,the mechanical properties of the DC A-TIG welds are a little higher and the number of the micro porosities decreases dramatically.
作者
张聃
尹玉环
孙耀华
吴伟
曲文卿
ZHANG Dan;YIN Yuhuan;SUN Yaohua;WU Wei;QU Wenqing(Shanghai Aerospace Equipments Manufacturer Co,.Ltd,Shanghai 200245,China;School of Materials Science and Engineering,Beihang University,Beijing 100191,China)
出处
《焊接学报》
EI
CAS
CSCD
北大核心
2018年第10期93-97,132,133,共7页
Transactions of The China Welding Institution
基金
工信部智能制造新模式应用项目(2016ZXFM03002)
关键词
直流A-TIG
2A14铝合金
活性剂
微气孔
direct current activating TIG welding
2A14 aluminum alloy
activating flux
micro porosity
