Superplastic properties of ultrafine-grained Mg alloys processed by extrusion plus equal-channel angular pressing

Yuichi Miyahara, Kiyoshi Matsubara, Koji Neishi, Zenji Horita, Terence G. Langdon

Research output: Contribution to journalConference article

6 Citations (Scopus)

Abstract

The process of extrusion followed by equal-channel angular pressing (ECAP), designated as EX-ECAP, was applied to a model cast Mg alloy containing 7.5wt%Al and 0.2wt%Zr and a commercial cast AZ61 alloy for grain refinement to the submicrometer range. The thermal stability of the fine-grained structure was examined by conducting static annealing experiments. In order to increase the area fraction of high-angle boundaries, additional ECAP was attempted at a higher temperature. Tensile testing was conducted on the fine-grained alloy at elevated temperatures. It is shown that low-temperature superplasticity or high-strain rate superplasticity may be achieved in the fine-grained sample processed by EX-ECAP.

Original languageEnglish
Pages (from-to)551-556
Number of pages6
JournalMaterials Science Forum
Volume419-422
Issue numberI
Publication statusPublished - Apr 21 2003
EventProceedings of the Second Osaka International Conference on Platform Science and Technology for Advanced Magnesium Alloys 2003 - Osaka, Japan
Duration: Jan 26 2003Jan 30 2003

Fingerprint

Equal channel angular pressing
pressing
Extrusion
superplasticity
Superplasticity
cast alloys
Grain refinement
Tensile testing
Temperature
strain rate
Strain rate
Thermodynamic stability
thermal stability
fine structure
Annealing
conduction
annealing
Ultrafine
Experiments
temperature

All Science Journal Classification (ASJC) codes

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

Cite this

Miyahara, Y., Matsubara, K., Neishi, K., Horita, Z., & Langdon, T. G. (2003). Superplastic properties of ultrafine-grained Mg alloys processed by extrusion plus equal-channel angular pressing. Materials Science Forum, 419-422(I), 551-556.

Superplastic properties of ultrafine-grained Mg alloys processed by extrusion plus equal-channel angular pressing. / Miyahara, Yuichi; Matsubara, Kiyoshi; Neishi, Koji; Horita, Zenji; Langdon, Terence G.

In: Materials Science Forum, Vol. 419-422, No. I, 21.04.2003, p. 551-556.

Research output: Contribution to journalConference article

Miyahara, Y, Matsubara, K, Neishi, K, Horita, Z & Langdon, TG 2003, 'Superplastic properties of ultrafine-grained Mg alloys processed by extrusion plus equal-channel angular pressing', Materials Science Forum, vol. 419-422, no. I, pp. 551-556.
Miyahara Y, Matsubara K, Neishi K, Horita Z, Langdon TG. Superplastic properties of ultrafine-grained Mg alloys processed by extrusion plus equal-channel angular pressing. Materials Science Forum. 2003 Apr 21;419-422(I):551-556.
Miyahara, Yuichi ; Matsubara, Kiyoshi ; Neishi, Koji ; Horita, Zenji ; Langdon, Terence G. / Superplastic properties of ultrafine-grained Mg alloys processed by extrusion plus equal-channel angular pressing. In: Materials Science Forum. 2003 ; Vol. 419-422, No. I. pp. 551-556.
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