TY - JOUR
T1 - Nanostructure control of age-hardenable Al 2024 alloy by high-pressure torsion
AU - Mohamed, Intan Fadhlina
AU - Lee, Seungwon
AU - Horita, Zenji
N1 - Copyright:
Copyright 2014 Elsevier B.V., All rights reserved.
PY - 2014
Y1 - 2014
N2 - A concurrent strengthening process by high-pressure torsion (HPT) and fine precipitation hardening of an Al 2024 alloy has been studied. The HPT was conducted on disks of the alloys under an applied pressure of 6 GPa for 0.75 and 5 turns with a rotation speed of 1 rpm at room temperature. The HPT processing leads to microstructural refinement with an average grain size of ∼240 nm and to an increase in hardness up to a saturation after 5 turns. Aging treatment is performed for sample after 5 turns at temperatures of 423 K for a maximum period up to 256 hours. The hardness increased above the hardness level after HPT processing through the subsequent aging. This study thus suggests that simultaneous hardening due to grain refinement and fine precipitation occurred by a combination of HPT processing and subsequent aging at 423 K.
AB - A concurrent strengthening process by high-pressure torsion (HPT) and fine precipitation hardening of an Al 2024 alloy has been studied. The HPT was conducted on disks of the alloys under an applied pressure of 6 GPa for 0.75 and 5 turns with a rotation speed of 1 rpm at room temperature. The HPT processing leads to microstructural refinement with an average grain size of ∼240 nm and to an increase in hardness up to a saturation after 5 turns. Aging treatment is performed for sample after 5 turns at temperatures of 423 K for a maximum period up to 256 hours. The hardness increased above the hardness level after HPT processing through the subsequent aging. This study thus suggests that simultaneous hardening due to grain refinement and fine precipitation occurred by a combination of HPT processing and subsequent aging at 423 K.
UR - http://www.scopus.com/inward/record.url?scp=84906330075&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84906330075&partnerID=8YFLogxK
U2 - 10.1088/1757-899X/63/1/012083
DO - 10.1088/1757-899X/63/1/012083
M3 - Conference article
AN - SCOPUS:84906330075
VL - 63
JO - IOP Conference Series: Materials Science and Engineering
JF - IOP Conference Series: Materials Science and Engineering
SN - 1757-8981
IS - 1
M1 - 012083
T2 - 6th International Conference on Nanomaterials by Severe Plastic Deformation, NanoSPD 2014
Y2 - 30 June 2014 through 4 July 2014
ER -