Micro-structure and micro-textural studies of friction stir welded AA6061-T6 subjected to different rotation speeds

Tao Wang, Yong Zou*, Kenji Matsuda

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

41 Scopus citations

Abstract

The heat-treated AA6061-T6 plate was welded by friction stir butt-welding (FSW) using different rotation speeds. Electron backscattered diffraction (EBSD) results showed the occurrence of geometric dynamic re-crystallization within the stir zone (SZ), and existence of different shear texture components across the weld zone was revealed. It was found that the material flow was asymmetric around the tool in the stir zone. In addition, different rotation speeds also lead to different combinations of heat input and heterogeneous plastic deformation within the stir zone, which influences the mechanical behavior of the different welds during uniaxial tension and micro-hardness tests, due to the variations in the micro-structure.

Original languageEnglish
Pages (from-to)13-21
Number of pages9
JournalMaterials and Design
Volume90
DOIs
StatePublished - 2016

Keywords

  • Aluminum alloys
  • EBSD
  • FSW
  • Geometric dynamic re-crystallization

ASJC Scopus subject areas

  • General Materials Science
  • Mechanics of Materials
  • Mechanical Engineering

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