TY - GEN
T1 - Influence of HPT or rolling on age-hardening in Al-Mg-Si alloys
AU - Nagai, Takeshi
AU - Matsuda, Kenji
AU - Nakamura, Junya
AU - Kawabata, Tokimasa
AU - Ikeno, Susumu
AU - Akama, Daichi
AU - Horita, Zenji
AU - Hirosawa, Syoichi
N1 - Copyright:
Copyright 2012 Elsevier B.V., All rights reserved.
PY - 2012
Y1 - 2012
N2 - Severe plastic deformation (SPD) techniques, such as equal channel angular pressing (ECAP), accumulative roll bonding (ARB) and high pressure torsion (HPT), have been extensively researched to achieve. SPD process makes use of the plastic deformation where no change in the cross-sectional dimension of a work piece occurs during straining. In this work, the effect of HPTed or rolled on aging behavior and microstructure in Al-Mg-Si alloys were investigated. The results show that processing by HPTed leads to significant grain refinement with a grain size of ∼400nm. Age-hardening phenomenon was confirmed at 343K and 373K but not at 423K for the HPTed Al-Mg-Si alloy. For the rolled alloys, there is little difference between the hardness of the alloys with different rolling rate. On the other hand, crystal grain with high dislocation density and grain boundary precipitates are observed with TEM analysis for HPTed samples aged at 473 K.
AB - Severe plastic deformation (SPD) techniques, such as equal channel angular pressing (ECAP), accumulative roll bonding (ARB) and high pressure torsion (HPT), have been extensively researched to achieve. SPD process makes use of the plastic deformation where no change in the cross-sectional dimension of a work piece occurs during straining. In this work, the effect of HPTed or rolled on aging behavior and microstructure in Al-Mg-Si alloys were investigated. The results show that processing by HPTed leads to significant grain refinement with a grain size of ∼400nm. Age-hardening phenomenon was confirmed at 343K and 373K but not at 423K for the HPTed Al-Mg-Si alloy. For the rolled alloys, there is little difference between the hardness of the alloys with different rolling rate. On the other hand, crystal grain with high dislocation density and grain boundary precipitates are observed with TEM analysis for HPTed samples aged at 473 K.
KW - Age-hardening
KW - Al-Mg-Si
KW - HPT
KW - Rolling
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U2 - 10.4028/www.scientific.net/AMR.409.603
DO - 10.4028/www.scientific.net/AMR.409.603
M3 - Conference contribution
AN - SCOPUS:84855220923
SN - 9783037853047
T3 - Advanced Materials Research
SP - 603
EP - 606
BT - THERMEC 2011 Supplement
T2 - 7th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC'2011
Y2 - 1 August 2011 through 5 August 2011
ER -