Microstructure and anisotropic mechanical behavior of friction stir welded AA2024 alloy sheets

Zhihan Zhang, Wenya Li, Jinglong Li, Y. J. Chao, A. Vairis

Research output: Contribution to journalArticlepeer-review

30 Scopus citations

Abstract

The anisotropic mechanical properties of friction stir welded (FSW) AA2024-T3 alloy joints were investigated based on the uniaxial tensile tests. The joint microstructure was examined by using electron back-scattered diffraction and transmission electron microscope. Results show that the evident anisotropic failure and yielding are present in the FSW joints. With the increase of loading angle from 0°to 90°the ultimate tensile strength and elongation of the specimens consistently decrease, or at first decrease and then increase, depending on the FSW process parameters. The specimen cut from the weld direction, i.e. a loading angle of 0°, exhibits the highest strength and elongation.

Original languageEnglish
Pages (from-to)112-118
Number of pages7
JournalMaterials Characterization
Volume107
DOIs
StatePublished - 13 Jul 2015

Keywords

  • Aluminum alloy
  • Anisotropic mechanical property
  • Friction stir welding
  • Microstructure

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