Strengthening of Al 6061 alloy by high-pressure torsion through grain refinement and aging

Mohamed Intan Fadhlina, Seung Won Lee, Zen Ji Horita

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

1 Citation (Scopus)

Abstract

The concurrent strengthening process by high-pressure torsion (HPT) and fine precipitation hardening of an Al 6061 alloy has been studied. The HPT was conducted on disks of the alloys at room temperature with an applied pressure of 6 GPa for 1 and 5 turns with a rotation speed of 1 rpm. It is shown that the HPT processing leads to microstructural refinement with an average grain size of ~200 nm and to an increase in hardness up to a saturation after 5 turns. Aging treatment was performed at temperatures of 373 and 423 K for a maximum period up to 256 hours. The hardness at the saturation level remains the same during aging at 373 K. When aged at 423 K, the hardness decreases from the beginning of the aging. This study thus suggests that aging of the HPT-processed sample may not be effective to strengthen the alloy if it is carried out at higher temperatures. It is suggested that simultaneous strengthening may be achieved through reduced straining and aging at reduced temperatures.

Original languageEnglish
Title of host publicationLight Metals Technology 2013
Pages408-412
Number of pages5
Volume765
DOIs
Publication statusPublished - 2013
Externally publishedYes
Event6th International Light Metals Technology Conference, LMT 2013 - Old Windsor, United Kingdom
Duration: 24 Jul 201326 Jul 2013

Publication series

NameMaterials Science Forum
Volume765
ISSN (Print)02555476

Other

Other6th International Light Metals Technology Conference, LMT 2013
CountryUnited Kingdom
CityOld Windsor
Period24/7/1326/7/13

Fingerprint

Grain refinement
Strengthening (metal)
Torsional stress
torsion
Aging of materials
hardness
Hardness
saturation
Temperature
precipitation hardening
Age hardening
grain size
temperature
room temperature
Processing

Keywords

  • Al 6061
  • Grain refinement
  • High-pressure torsion
  • Precipitation hardening
  • Severe plastic deformation

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering
  • Mechanics of Materials

Cite this

Intan Fadhlina, M., Lee, S. W., & Horita, Z. J. (2013). Strengthening of Al 6061 alloy by high-pressure torsion through grain refinement and aging. In Light Metals Technology 2013 (Vol. 765, pp. 408-412). (Materials Science Forum; Vol. 765). https://doi.org/10.4028/www.scientific.net/MSF.765.408

Strengthening of Al 6061 alloy by high-pressure torsion through grain refinement and aging. / Intan Fadhlina, Mohamed; Lee, Seung Won; Horita, Zen Ji.

Light Metals Technology 2013. Vol. 765 2013. p. 408-412 (Materials Science Forum; Vol. 765).

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

Intan Fadhlina, M, Lee, SW & Horita, ZJ 2013, Strengthening of Al 6061 alloy by high-pressure torsion through grain refinement and aging. in Light Metals Technology 2013. vol. 765, Materials Science Forum, vol. 765, pp. 408-412, 6th International Light Metals Technology Conference, LMT 2013, Old Windsor, United Kingdom, 24/7/13. https://doi.org/10.4028/www.scientific.net/MSF.765.408
Intan Fadhlina M, Lee SW, Horita ZJ. Strengthening of Al 6061 alloy by high-pressure torsion through grain refinement and aging. In Light Metals Technology 2013. Vol. 765. 2013. p. 408-412. (Materials Science Forum). https://doi.org/10.4028/www.scientific.net/MSF.765.408
Intan Fadhlina, Mohamed ; Lee, Seung Won ; Horita, Zen Ji. / Strengthening of Al 6061 alloy by high-pressure torsion through grain refinement and aging. Light Metals Technology 2013. Vol. 765 2013. pp. 408-412 (Materials Science Forum).
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