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

Intan Fadhlina Binti Mohamed, Seung Won Lee, Zenji Horita

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

1 被引用数 (Scopus)

抄録

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.

本文言語英語
ホスト出版物のタイトルLight Metals Technology 2013
ページ408-412
ページ数5
DOI
出版ステータス出版済み - 8 30 2013
イベント6th International Light Metals Technology Conference, LMT 2013 - Old Windsor, 英国
継続期間: 7 24 20137 26 2013

出版物シリーズ

名前Materials Science Forum
765
ISSN(印刷版)0255-5476

その他

その他6th International Light Metals Technology Conference, LMT 2013
Country英国
CityOld Windsor
Period7/24/137/26/13

All Science Journal Classification (ASJC) codes

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

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