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    STP1584

    Measuring Mechanical Properties of Fillet Arc T-Welded Aluminum Alloy AA7xxx Extrusions Using Digital Image Correlation

    Published: 30 January 2015


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    Abstract

    There has been an increasing interest in fabricating automotive components from copper (Cu)-lean 7xxx-series aluminum (Al) alloys because of their relatively high strength, toughness, energy absorption, weldability, and formability. Fusion arc welding is a preferred process to join these alloys to other Al alloys during assembly. A study was undertaken to characterize the mechanical (tensile-shear) response of single-sided fillet arc T-welded joints between Cu-lean AA7xxx extrusions and AA6063 sheet made using the gas metal arc-welding (GMAW) process and ER5356 filler wire. Strain measurements were made using an ARAMIS system based on digital image correlation (DIC). An upper-bound analysis (UBA) was conducted to derive an empirical model of the upper-bound strength of the arc-welded joints. The good agreement between the predicted and experimental results shows that the empirical model can be used to evaluate the tensile-shear response of the dissimilar Al alloy arc-welded joint.

    Keywords:

    Al alloys, fillet weld, tensile-shear, digital image correlation, upper-bound analysis


    Author Information:

    Bruhis, M.
    GM Centre for Automotive Materials and Corrosion, McMaster Univ., Hamilton, ON

    Dabrowski, J.
    GM Centre for Automotive Materials and Corrosion, McMaster Univ., Hamilton, ON

    Kish, J. R.
    GM Centre for Automotive Materials and Corrosion, McMaster Univ., Hamilton, ON


    Committee/Subcommittee: E08.03

    DOI: 10.1520/STP158420140050