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《矿物冶金与材料学报(英文版)》 2018-08
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Improvement of microstructure and corrosion properties of friction stir welded AA5754 by adding Zn interlayer

Ali Shamsipur;Amir Anvari;Ahmad Keyvani;Department of Mining and Metallurgical Engineering,Amirkabir University of Technology;School of Metallurgy and Materials Engineering,Faculty of Technology and Engineering,Shahrekord University;  
This study investigated the effect of Zn foil layers on the microstructure and corrosion characteristics of friction stir welded aluminum alloy 5754.Samples of various joints were prepared by applying different rotational and welding speeds,and their microstructures were evaluated via a metallographic technique and scanning electron microscopy equipped with energy-dispersive X-ray spectroscopy elemental analysis.The anticorrosion behavior of joints in the absence and presence of a Zn interlayer was studied by cyclic potentiodynamic polarization test in 3.5 wt% Na Cl aqueous solution,and sound welds were obtained in the presence of the Zn interlayer foil.The results revealed that the joint made at a rotational speed of 800 r/min and traveling speed of 15 mm/min achieved a chemical composition identical to that of aluminum alloy 7 xxx series,and as such,it showed the best resistance to corrosion.
【CateGory Index】: TG453.9
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