Author:
Sharma Chaitanya,Upadhyay Vikas
Abstract
Abstract
Friction stir welding of dissimilar aluminum alloys AA5086 and AA7039 were carried out and results are presented. The specific attention was given to microstructure evolution in welds after dissimilar friction stir welding. Single pass, dissimilar butt welds were made using optimized parameters and threaded cylindrical tool, keeping AA5086 plate on retreating side. Integrity of welds was assessed by visual inspection. Initial microstructure of base metals was transformed and zones specific to friction stir welding were observed in stir zone. Microstructure was heterogeneous in the stir zone. The transition boundary had large population of strengthening precipitates than region rich in Zn or Mg. The selected dissimilar aluminum alloys are weldable by friction stir welding with attractive weld properties.
Subject
General Physics and Astronomy
Cited by
7 articles.
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