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ORIGINAL PAPER
Influence of Multi Extrusion Die Process on Mechanical and Chemical Behavior of 2024-T3 Alloy
1
Technical Engineering College - Baghdad, Middle Technical University, Baghdad, Iraq
2
Institute of Technology - Baghdad, Middle Technical University, Baghdad, Iraq.
Online publication date: 2022-08-29
Publication date: 2022-09-01
International Journal of Applied Mechanics and Engineering 2022;27(3):163-170
KEYWORDS
ABSTRACT
In this paper, a cold multi-pass extrusion process for a 15mm in diameter solid 2024-T3 aluminum alloy rod was carried out using three dies to obtain three different diameters of 14mm, 13mm, and 12mm. The microstructure, hardness, and corrosion behavior were investigated before and after the extrusion process. Load-Displacement data were recorded during each extrusion process. The electrochemical corrosion test was made in a 3.5 wt.% NaCl solution using potentiostat instrument under static potentials test. Corrosion current was recorded to determine the corrosion rate for specimens. The results showed that the extrusion load increased with the number of extrusion passes, which is also seen in hardness test results. In addition, the corrosion rate decreased with the increase in the number of extrusion passes. This is due to severe plastic deformation, which generates a fine grain structure of (AlCu) and (AlCuMg) components.
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