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ZHU Haixia, CAO Rui, LI Yafan, LIN Qiaoli, CHEN Jianhong. Joining mechanisms of cold metal transfer welding-brazing of Mg to bare steel[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2016, 37(5): 77-80.
Citation: ZHU Haixia, CAO Rui, LI Yafan, LIN Qiaoli, CHEN Jianhong. Joining mechanisms of cold metal transfer welding-brazing of Mg to bare steel[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2016, 37(5): 77-80.
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Joining mechanisms of cold metal transfer welding-brazing of Mg to bare steel

  • 1.

    State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou 730050, China

  • 2.

    Harbin Electric Power Equipment Co., Ltd, Harbin 150000, China

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  • Received Date: July 11, 2014
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    • Abstract
  • AZ31B magnesium alloys and Q235 bare steel are joined by cold metal transfer process with AZ61 Mg based filler wire. The effects of processing parameters on weld appearance and mechanical properties are studied. The joining mechanism is studied by analyzing the microstructure and distribution of elements of welded joints. The results indicate that the tensile strength of the joints first increased and then decreased with the increase of the wire feed speed. The joint with larger weld width is fractured in the magnesium heat affected zone and has a tensile load more than 6 kN. Mg and bare steel can be efficiently joined by the thin interfacial reaction layers with Fe-Al phase, which is attributed to the diffusion of the element Al.
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    • References (5)
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