Effect of tool pin features on process response variables during friction stir welding of dissimilar aluminum alloys

Md Reza-E-Rabby, W. Tang, A. P. Reynolds

Research output: Contribution to journalArticlepeer-review

36 Scopus citations

Abstract

In this paper, the effect of pin features and orientation/placement of the materials on advancing side were investigated for friction stir welding (FSW) of dissimilar aluminum alloys AA2050 and AA 6061. Pins for FSW were produced with a 2?12 mm pitch thread having three flats/flutes. Three sets of rotational speed/welding speed were used to perform a series of welds in a butt joint arrangement. The results show that, joint quality, process response variables and welding temperature are highly affected by pin features and material orientation in FSW. Defect free joints with effective material transportation in the weld nugget zone were obtained when welding was performed with AA2050 on the advancing side. The tool also encounters less in plane reaction force for welding with 2050 on the advancing side. Pin with thread+3 flats produces quality welds at low rotational and travel speed regardless of the location of alloys on advancing or retreating side.

Original languageEnglish
Pages (from-to)425-432
Number of pages8
JournalScience and Technology of Welding and Joining
Volume20
Issue number5
DOIs
StatePublished - 2015

Keywords

  • AA2050
  • AA6061
  • Co-flow flutes
  • Counter flow flutes
  • Dissimilar material friction stir welding
  • Flats
  • Forge force
  • Power
  • Torque

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