Developing high strain rate superplasticity in aluminum alloys

Cheng Xu, Minoru Furukawa, Zenji Horita, Terence G. Langdon

Research output: Contribution to journalConference article

2 Citations (Scopus)

Abstract

The conventional materials used in superplastic forming operations generally have grain sizes of ∼2 μm or larger and they exhibit superplasticity at relatively low strain rates. Processing by equal-channel angular pressing (ECAP) produces materials having ultrafine-grain sizes, usually in the submicrometer range. If these ultrafine grains show reasonable stability at elevated temperatures, the alloys may exhibit a capability for achieving superplastic elongations at high strain rates. This paper examines the development of ultrafme-grained structures and superplastic ductilities in a spray-cast aluminum 7034 alloys through ECAP. The results show that ECAP is a very effective procedure for achieving grain refinement and superplasticity at rapid strain rates.

Original languageEnglish
Pages (from-to)2949-2954
Number of pages6
JournalMaterials Science Forum
Volume475-479
Issue numberIV
DOIs
Publication statusPublished - Jan 1 2005
EventPRICM 5: The Fifth Pacific Rim International Conference on Advanced Materials and Processing - Beijing, China
Duration: Nov 2 2004Nov 5 2004

All Science Journal Classification (ASJC) codes

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

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    Xu, C., Furukawa, M., Horita, Z., & Langdon, T. G. (2005). Developing high strain rate superplasticity in aluminum alloys. Materials Science Forum, 475-479(IV), 2949-2954. https://doi.org/10.4028/0-87849-960-1.2949