EFFECT OF CONSTANT AND PULSED CURRENT GAS TUNGSTEN ARC WELDING ON TENSILE PROPERTIES AND MICRO STRUCTURAL CHARACTERISTICS OF AZ31B MAGNESIUM ALLOY
Keywords:
Magnesium alloy, GTA welding, Tensile properties, MicrostructureAbstract
The challenges of achieving significant weight reduction in the automobile industry in the context of fuel savings, recyclability and emission reduction has promoted focus on lightweight metals such as magnesium. Gas tungsten arc welding (GTAW) is widely used material joining process, especially used to weld the non ferrous metals such as magnesium. Hence, in this investigation it is planned to study the effect of constant and pulsed current welding on tensile and microstructure properties of AZ31B magnesium alloy. From this investigation, it is found that the joints fabricated with pulsed current having the superior tensile properties compared to constant current welding.
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References
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