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RUAN Ye, QIU Xiaoming, GONG Wenbiao, ZHAO Shihang, SUN Daqian. Microstructures and corrosion-resistant performance of Al twin wire MIG welded joint[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2011, (2): 109-112.
Citation: RUAN Ye, QIU Xiaoming, GONG Wenbiao, ZHAO Shihang, SUN Daqian. Microstructures and corrosion-resistant performance of Al twin wire MIG welded joint[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2011, (2): 109-112.
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Microstructures and corrosion-resistant performance of Al twin wire MIG welded joint

  • 1.

    School of Materials Science and Engineering, Jilin University, Changchun 130025, China

  • 2.

    School of Materials Science and Engineering, Changchun University of Technology, Changchun 130012, China

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  • Received Date: October 27, 2009
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  • Microstructures and corrosion-resistant performance of 6082-T6 Al twin wire MIG welded joint are studied by SEM and XRD technology.Experiments show that the welded seam is composed of a lot of α-Al,α-Al+Mg2Si and a few Mg2Si;moreover,Mg2Si largely presents in the grain boundary.Corrosion-resistant performance is studied by measuring the potentiodynamic polarization curves and corrosion surface morphologies of twin wire MIG welded joint,and the results show that corrosion-resistant performance of the matrix is better than that of the weld seam,and precipitated Mg2Si decreases the corrosion-resistant performance of the weld seam.
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