Using ring samples to evaluate the processing characteristics in high-pressure torsion

Yosuke Harai, Kaveh Edalati, Zenji Horita, Terence G. Langdon

Research output: Contribution to journalArticle

62 Citations (Scopus)

Abstract

An Al-3% Mg-0.2% Sc alloy was processed by high-pressure torsion (HPT) using samples in the form of solid disks and rings. Following HPT, all values of the measured Vickers microhardness fall onto a single curve when plotted against the equivalent strain, such that there are increasing values of hardness at the lower strains and hardness saturation above equivalent strains of ∼40. This saturation level is independent of the number of revolutions and the applied pressure. The grain size following HPT is ∼220 nm, and tensile tests show that the material is superplastic at a testing temperature of 573 K.

Original languageEnglish
Pages (from-to)1147-1153
Number of pages7
JournalActa Materialia
Volume57
Issue number4
DOIs
Publication statusPublished - Feb 1 2009

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Torsional stress
Processing
Hardness
Microhardness
Testing
Temperature

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Polymers and Plastics
  • Metals and Alloys

Cite this

Using ring samples to evaluate the processing characteristics in high-pressure torsion. / Harai, Yosuke; Edalati, Kaveh; Horita, Zenji; Langdon, Terence G.

In: Acta Materialia, Vol. 57, No. 4, 01.02.2009, p. 1147-1153.

Research output: Contribution to journalArticle

Harai, Yosuke ; Edalati, Kaveh ; Horita, Zenji ; Langdon, Terence G. / Using ring samples to evaluate the processing characteristics in high-pressure torsion. In: Acta Materialia. 2009 ; Vol. 57, No. 4. pp. 1147-1153.
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