Open AccessFriction Stir Welding of Dissimilar Aluminum Alloys AA5086 and AA7039
Author(s) -
Chaitanya Sharma,
Vikas Upadhyay
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1240/1/012160
Subject(s) - friction stir welding , welding , materials science , microstructure , metallurgy , aluminium , heat affected zone , butt welding , friction welding , composite material
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.