Effect of Modified AA 5356 Filler on Corrosion Behavior of AA 6061 Alloy GTA Welds
نویسندگان
چکیده
The corrosion behavior of the fusion zone of gas tungsten arc (GTA) welds of AA6061 alloy was studied. Role of gas tungsten arc welding techniques such as continuous current (CC) and pulsed current (PC) and reference filler (AA5356) were studied. Role of different grain refiners such as scandium, zirconium and Tibor in the reference filler was studied. Dynamic polarization testing was used to determine the pitting corrosion resistance of the fusion zone. Optical studies was carried out to find the mechanism of corrosion. The fusion zone of welds made with the 0.5%Sc with AA5356 filler with PC technique shown better corrosion resistance.
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