文献类型：期刊文献

英文题名：Welding Characteristic Analysis of Hybrid Welding on 2014 Aluminum Alloy

作者：Gao, Zongyu[1,2];Fang, Jianjun[1];Zhang, Yinong[1];Ran, Guowei[3];Zhang, Shide[1]

第一作者：Gao, Zongyu;高宗余

通讯作者：Gao, ZY[1]

机构：[1]Beijing Union Univ, Coll Automat, Beijing 100101, Peoples R China;[2]Beijing Jiaotong Univ, Sch Elect Engn, Beijing 100044, Peoples R China;[3]Chinese Acad Agr Engn, Beijing 1000104, Peoples R China

第一机构：北京联合大学城市轨道交通与物流学院

通讯机构：[1]corresponding author), Beijing Union Univ, Coll Automat, Beijing 100101, Peoples R China.|[1141751]北京联合大学城市轨道交通与物流学院;[11417]北京联合大学;

年份：2013

卷号：8

期号：6

起止页码：7905-7917

外文期刊名：INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE

收录：;Scopus(收录号：2-s2.0-84878958861);WOS:【SCI-EXPANDED(收录号:WOS:000323546100036)】；

基金：The authors would like to appreciate the supported by nation "973" high technology item of China(Grant no.2010EB701103)

语种：英文

外文关键词：aluminum alloy; hybrid welding; joint properties

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.