Mechanical properties and microstructural evaluation of AA1100 to AZ31 dissimilar friction stir welds
In this paper, microstructure and mechanical properties of dissimilar friction stir welds of
AA1100 and AZ31 were investigated to understand the effects of rotational and travel speed
as well as pin position. The tensile results of welded samples revealed that the sound welds
were formed when the stirring pin deviated from the centreline to the AZ31 side. The X-ray
diffraction shows that Al 3 Mg 2 and Al 12 Mg 17 intermetallics formation occurs in the stir
zone during the welding process. High hardness of these intermetallic phases increased the …
AA1100 and AZ31 were investigated to understand the effects of rotational and travel speed
as well as pin position. The tensile results of welded samples revealed that the sound welds
were formed when the stirring pin deviated from the centreline to the AZ31 side. The X-ray
diffraction shows that Al 3 Mg 2 and Al 12 Mg 17 intermetallics formation occurs in the stir
zone during the welding process. High hardness of these intermetallic phases increased the …
Abstract
In this paper, microstructure and mechanical properties of dissimilar friction stir welds of AA1100 and AZ31 were investigated to understand the effects of rotational and travel speed as well as pin position. The tensile results of welded samples revealed that the sound welds were formed when the stirring pin deviated from the centreline to the AZ31 side. The X-ray diffraction shows that Al3Mg2 and Al12Mg17 intermetallics formation occurs in the stir zone during the welding process. High hardness of these intermetallic phases increased the hardness of the stir zone to 110 Hv. The best tensile results were obtained in the sample processed in the range of 28–32 (rev/mm) rotational to travel speed ratio.
Elsevier
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