Using extrusion and ECAP processing to achieve low temperature and high strain rate superplasticity

Kiyoshi Matsubara, Yuichi Miyahara, Koichi Makii, Zenji Horita, Terence G. Langdon

Research output: Contribution to journalConference article

3 Citations (Scopus)

Abstract

Grain refinement of a cast Mg-9% Al alloy was attempted using equal-channel angular pressing (ECAP). It is shown that the introduction of extrusion before ECAP is important in order to refine the grain size successfully through ECAP without breaking the sample: this combined process is designated EX-ECAP. Static annealing experiments were conducted to examine the thermal stability of the fine-grained structure produced by EX-ECAP. Tensile testing was conducted on the fine-grained alloy at elevated temperatures. It is shown that both low temperature superplasticity and high strain rate superplasticity are attained for the fine-grained sample.

Original languageEnglish
Pages (from-to)497-502
Number of pages6
JournalMaterials Science Forum
Volume419-422
Issue numberI
DOIs
Publication statusPublished - Jan 1 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

All Science Journal Classification (ASJC) codes

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

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