Microstructures and Mechanical Properties of Al-12.7Si-0.7Mg Alloy Welded Joints

Dong Wang; Chang Shu He; Zhen Yu Qi; Hao Wang; Xiang Zhao; Liang Zuo

doi:10.4028/www.scientific.net/AMR.712-715.623

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 712-715Microstructures and Mechanical Properties of...

Microstructures and Mechanical Properties of Al-12.7Si-0.7Mg Alloy Welded Joints

Abstract:

3-mm thick Al-12.7Si-0.7Mg alloy plates were cut from the hot extrusion profiles. A butt-welding joint was made by gas metal arc welding (GMAW). The microstructures and mechanical properties of welded joint were studied by scanning electron microscope and tensile test methods. The results show that weld bead with good appearance and internal quality was obtained under the optimized welding parameters. The ultimate tensile strength for base material and welded joints of hot extrusion Al-12.7Si-0.7Mg alloy are much higher than that of 6063 alloy in T4 condition.