Effect of HPT on age-hardening behavior in Cu-added excess Mg-type Al-Mg-Si alloys

S. Maruno, S. Saikawa, S. Hirosawa, T. Hamaoka, Z. Horita, S. Lee, D. Terada, K. Matsuda

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Severe plastic deformation (SPD) techniques such as 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 HPT on aging behavior and microstructure in excess Mg-type Al-Mg-Si alloys including Cu. These alloys were investigated by hardness test and TEM observation. The results show that processing by HPT leads to significant grain refinement with a grain size of ~250nm. Age-hardening phenomenon is observed at 343K and 373K for the Al-Mg-Si alloys with HPT. A few density of dislocation in the crystal grain was observed. The typical needle-shaped precipitates of Al-Mg-Si alloys were not observed in the matrix.

Original languageEnglish
Title of host publicationTHERMEC 2013 Supplement
PublisherTrans Tech Publications Ltd
Pages487-490
Number of pages4
ISBN (Print)9783038350743
DOIs
Publication statusPublished - 2014 Jan 1
Event8th International Conference on Processing and Manufacturing of Advanced Materials: Processing, Fabrication, Properties, Applications, THERMEC 2013 - Las Vegas, NV, United States
Duration: 2013 Dec 22013 Dec 6

Publication series

NameAdvanced Materials Research
Volume922
ISSN (Print)1022-6680

Other

Other8th International Conference on Processing and Manufacturing of Advanced Materials: Processing, Fabrication, Properties, Applications, THERMEC 2013
CountryUnited States
CityLas Vegas, NV
Period13/12/213/12/6

Keywords

  • Age-hardening
  • Al-Mg-Si alloy
  • HPT
  • TEM

ASJC Scopus subject areas

  • Engineering(all)

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    Maruno, S., Saikawa, S., Hirosawa, S., Hamaoka, T., Horita, Z., Lee, S., Terada, D., & Matsuda, K. (2014). Effect of HPT on age-hardening behavior in Cu-added excess Mg-type Al-Mg-Si alloys. In THERMEC 2013 Supplement (pp. 487-490). (Advanced Materials Research; Vol. 922). Trans Tech Publications Ltd. https://doi.org/10.4028/www.scientific.net/AMR.922.487