Extra strengthening and superplasticity of ultrafine-grained A2024 alloy produced by high-pressure sliding

Takahiro Masuda, Yoichi Takizawa, Manabu Yumoto, Yoshiharu Otagiri, Zenji Horita

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

In this study, the method of high-pressure sliding (HPS) was applied for grain refinement of an A2024 alloy. Sheet samples with 10-15 mm width and 100 mm length with 1 mm thickness were processed by HPS under pressures of 2-3 GPa. Microstructural observations revealed that the grain size was refined to ∼200 nm. Tensile tests showed that the ultimate tensile strength reached 886 MPa with a total elongation of 7.1% and the anisotropy of samples was less developed in the HPS-processed samples. Extra strengthening was attained by aging at 423 K after HPS processing, leading to an ultimate tensile strength of 967 MPa at the peak aged condition. Superplastic elongation of more than 400% appeared when the A2024 alloy processed by HPS for 20 mm was deformed in tension at a testing temperature of 623 K with an initial strain rate of 1.0×10-3 s-1.

Original languageEnglish
Pages (from-to)593-601
Number of pages9
JournalNippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
Volume80
Issue number9
DOIs
Publication statusPublished - Jan 1 2016

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superplasticity
Superplasticity
Strengthening (metal)
sliding
tensile strength
elongation
Elongation
Tensile strength
tensile tests
Grain refinement
strain rate
grain size
Ultrafine
Strain rate
Anisotropy
Aging of materials
anisotropy
Testing
Processing

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys
  • Materials Chemistry

Cite this

Extra strengthening and superplasticity of ultrafine-grained A2024 alloy produced by high-pressure sliding. / Masuda, Takahiro; Takizawa, Yoichi; Yumoto, Manabu; Otagiri, Yoshiharu; Horita, Zenji.

In: Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals, Vol. 80, No. 9, 01.01.2016, p. 593-601.

Research output: Contribution to journalArticle

Masuda, Takahiro ; Takizawa, Yoichi ; Yumoto, Manabu ; Otagiri, Yoshiharu ; Horita, Zenji. / Extra strengthening and superplasticity of ultrafine-grained A2024 alloy produced by high-pressure sliding. In: Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals. 2016 ; Vol. 80, No. 9. pp. 593-601.
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