Strengthening of A2024 alloy by high-pressure torsion and subsequent aging

Intan Fadhlina Binti Mohamed, Takahiro Masuda, Seungwon Lee, Kaveh Edalati, Zenji Horita, Shoichi Hirosawa, Kenji Matsuda, Daisuke Terada, Mohd Zaidi Omar

研究成果: ジャーナルへの寄稿記事

11 引用 (Scopus)

抄録

An age-hardenable A2024 alloy is processed by high-pressure torsion (HPT) for grain refinement and further aged for fine precipitation. The HPT is conducted under an applied pressure of 6 GPa for 0.75, 1 and 5 turns with a rotation speed of 1 rpm at room temperature and this results in a significant grain size reduction to a grain size of ~ 240 ± 80 nm. The hardness sharply increases with imposing strain at an early stage but level off after 5 turns. Further aging at temperatures of 373 K and 423 K leads to extra hardening above the elevated hardness of the HPT-processed condition. Components contributing to the strengthening were evaluated in terms of grain refinement and fine precipitation including the contributions from dislocation accumulation and solid solution. In this study, a conclusion is reached such that simultaneous strengthening due to grain refinement and fine precipitation is achieved by application of HPT processing and subsequent aging.

元の言語英語
ページ(範囲)112-118
ページ数7
ジャーナルMaterials Science and Engineering A
704
DOI
出版物ステータス出版済み - 9 17 2017

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Strengthening (metal)
Torsional stress
torsion
Aging of materials
Grain refinement
hardness
grain size
Hardness
hardening
solid solutions
Hardening
Solid solutions
room temperature
Temperature
Processing
temperature

All Science Journal Classification (ASJC) codes

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

これを引用

Strengthening of A2024 alloy by high-pressure torsion and subsequent aging. / Mohamed, Intan Fadhlina Binti; Masuda, Takahiro; Lee, Seungwon; Edalati, Kaveh; Horita, Zenji; Hirosawa, Shoichi; Matsuda, Kenji; Terada, Daisuke; Omar, Mohd Zaidi.

:: Materials Science and Engineering A, 巻 704, 17.09.2017, p. 112-118.

研究成果: ジャーナルへの寄稿記事

Mohamed, IFB, Masuda, T, Lee, S, Edalati, K, Horita, Z, Hirosawa, S, Matsuda, K, Terada, D & Omar, MZ 2017, 'Strengthening of A2024 alloy by high-pressure torsion and subsequent aging', Materials Science and Engineering A, 巻. 704, pp. 112-118. https://doi.org/10.1016/j.msea.2017.07.083
Mohamed, Intan Fadhlina Binti ; Masuda, Takahiro ; Lee, Seungwon ; Edalati, Kaveh ; Horita, Zenji ; Hirosawa, Shoichi ; Matsuda, Kenji ; Terada, Daisuke ; Omar, Mohd Zaidi. / Strengthening of A2024 alloy by high-pressure torsion and subsequent aging. :: Materials Science and Engineering A. 2017 ; 巻 704. pp. 112-118.
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abstract = "An age-hardenable A2024 alloy is processed by high-pressure torsion (HPT) for grain refinement and further aged for fine precipitation. The HPT is conducted under an applied pressure of 6 GPa for 0.75, 1 and 5 turns with a rotation speed of 1 rpm at room temperature and this results in a significant grain size reduction to a grain size of ~ 240 ± 80 nm. The hardness sharply increases with imposing strain at an early stage but level off after 5 turns. Further aging at temperatures of 373 K and 423 K leads to extra hardening above the elevated hardness of the HPT-processed condition. Components contributing to the strengthening were evaluated in terms of grain refinement and fine precipitation including the contributions from dislocation accumulation and solid solution. In this study, a conclusion is reached such that simultaneous strengthening due to grain refinement and fine precipitation is achieved by application of HPT processing and subsequent aging.",
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AU - Mohamed, Intan Fadhlina Binti

AU - Masuda, Takahiro

AU - Lee, Seungwon

AU - Edalati, Kaveh

AU - Horita, Zenji

AU - Hirosawa, Shoichi

AU - Matsuda, Kenji

AU - Terada, Daisuke

AU - Omar, Mohd Zaidi

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