Grain structure evolution and mechanical properties of multi-channel spiral twist extruded AA5083
Author's Department
Mechanical Engineering Department
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https://doi.org/10.3390/met11081276
Document Type
Research Article
Publication Title
Metals
Publication Date
8-1-2021
doi
10.3390/met11081276
Abstract
This study presents a comprehensive evaluation of the effects of multi-channel spiral twist extrusion (MCSTE) processing on the mechanical properties and structural evolution of AA5083. The structural evolution and texture developed were mapped by electron backscatter diffraction (EBSD) for three successive passes and compared with an as-annealed plate. An evaluation of the hardness and tensile properties was presented and correlated with the EBSD findings. The dis-played EBSD results revealed that grain refinement was strongly associated with the presence of a high density of low-angle grain boundaries (LAGBs) after one pass, which developed into fine grains of less than 20 μm and high-angle grain boundaries (HAGBs) after three MCSTE passes. The three pass processing led to a 65% reduction in grain size. This reduction in grain size was coupled with an enhancement in the hardness and tensile properties. Additionally, the crystallographic texture study represented a slightly random texture due to the presence of intermetallic particles in AA5083. This study demonstrates the efficacy of MCSTE as a grain refinement tool.
Recommended Citation
APA Citation
Fouad, D.
El-Garaihy, W.
Ahmed, M.
Albaijan, I.
...
(2021). Grain structure evolution and mechanical properties of multi-channel spiral twist extruded AA5083. Metals, 11(8),
10.3390/met11081276
https://fount.aucegypt.edu/faculty_journal_articles/2595
MLA Citation
Fouad, Dina M., et al.
"Grain structure evolution and mechanical properties of multi-channel spiral twist extruded AA5083." Metals, vol. 11,no. 8, 2021,
https://fount.aucegypt.edu/faculty_journal_articles/2595