Evolution of non-dendritic equiaxed zone and its influence on mechanical properties of tungsten inert gas welded dissimilar A6061-T6 and A6082-T6 joint
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Date
2021
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier B.V.
Abstract
Non-dendritic equiaxed zone (EQZ) evolution and its influence on tensile properties of tungsten inert gas (TIG) welded joint of dissimilar A6061-T6 and A6082-T6 are studied. EQZ is observed in A6061-T6 interface whereas it is completely absent at the A6082-T6 interface. The distribution of fine Si eutectic phases along the grain boundaries (GBs) of EQZ of A6061-T6 interface appearing as discontinuous fine particles but as a continuous layer at most of the dendrite boundaries (DBs) at the center of the weld metal zone (WMZ). The improvement in strength of A6082-T6 interface compared to A6061-T6 interface is mainly attributed to the absence of EQZ in the former interface. © 2021 Elsevier B.V.
Description
Keywords
Gas welding, Grain boundaries, Inert gas welding, Inert gases, Textures, Tungsten, Continuous layers, Dendritics, Equiaxed zone, Eutectic phasis, Fine-particles, Grain-boundaries, Mechanical, Property, Tungsten inert gas, Weld metal, Welds
Citation
Materials Letters, 2021, 303, , pp. -