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铝-镀锌钢板脉冲旁路耦合电弧MIG熔钎焊工艺及接头组织分析

石玗, 王钊, 黄健康, 卢立晖, 樊丁

石玗, 王钊, 黄健康, 卢立晖, 樊丁. 铝-镀锌钢板脉冲旁路耦合电弧MIG熔钎焊工艺及接头组织分析[J]. 焊接学报, 2013, (5): 1-4.
引用本文: 石玗, 王钊, 黄健康, 卢立晖, 樊丁. 铝-镀锌钢板脉冲旁路耦合电弧MIG熔钎焊工艺及接头组织分析[J]. 焊接学报, 2013, (5): 1-4.
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SHI Yu, WANG Zhao, HUANG Jiankang, LU Lihui, FAN Ding. Study on microstructure of fusing-brazing joint of aluminum to galvanized steel by pulsed DE-MIG welding[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2013, (5): 1-4.
Citation: SHI Yu, WANG Zhao, HUANG Jiankang, LU Lihui, FAN Ding. Study on microstructure of fusing-brazing joint of aluminum to galvanized steel by pulsed DE-MIG welding[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2013, (5): 1-4.
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铝-镀锌钢板脉冲旁路耦合电弧MIG熔钎焊工艺及接头组织分析

  • 1.

    兰州理工大学甘肃省有色金属新材料重点实验室, 兰州 730050

  • 2.

    兰州理工大学有色金属合金及加工教育部重点实验室, 兰州 730050

基金项目: 国家自然科学基金资助项目(51165023);兰州理工大学红柳杰出人才培养计划;陇原青年创新人才扶持计划

Study on microstructure of fusing-brazing joint of aluminum to galvanized steel by pulsed DE-MIG welding

  • 1.

    State Key Laboratory of Gansu Advanced Nonferrous Metal Materials, Lanzhou University of Technology, Lanzhou 730050, China

  • 2.

    Key Laboratory of Nonferrous Metal Alloys of Ministry of Education, Lanzhou University of Technology, Lanzhou 730050, China

摘要

    摘要
  • 摘要: 提出了脉冲旁路耦合电弧MIG焊(pulsed DE-MIG welding)方法并介绍了其基本原理,针对该方法的特点和控制要求,建立了基于快速原型的脉冲旁路耦合电弧MIG焊试验系统,实现了铝-钢异种金属的连接.对铝-钢接头的组织成分进行分析.结果表明,铝-钢连接处的中间界面区Al和Fe原子扩散比较充分,生成了层状的Fe2Al5Zn0.4三元金属间化合物;焊趾部位存在富锌区,主要由α-Al固溶体和少量β-Zn相组成.同时对搭接接头进行了抗拉剪强度试验,最大强度达到186.73 MPa.
    Abstract: This paper put forward an arc welding method of pulsed DE-MIG welding,and introduced the basic principle of it. According to the characteristics and control requirements of this method,a pulsed DE-MIG welding experimental system based on rapid prototyping was established and it realized the dissimilar metal joining of aluminum and galvanized steel. The analysis of joint microstructure of aluminum and galvanized steel shows that Fe and Al atoms diffuse sufficiently in the intermediate interfacial region of joining of aluminum and galvanized steel. Ternary intermetallic compounds of lamellar Fe2Al5Zn0.4 are generated. Rich-zinc zone is located at the weld toe,and is mainly composed of α-Al and β-Zn solid solution. Meanwhile,experiments of tensile and shear strength of overlap joints were conducted, and the results show that the maximum tensile strength is up to 186.73 MPa.
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  • 收稿日期:  2012-03-04

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