The potential for scaling ECAP: Effect of sample size on grain refinement and mechanical properties

Zenji Horita, Takayoshi Fujinami, Terence G. Langdon

Research output: Contribution to journalArticlepeer-review

246 Citations (Scopus)

Abstract

The potential for scaling equal-channel angular pressing (ECAP) for use with large samples was investigated by conducting tests on an aluminum alloy using cylinders having diameters from 6-40 mm. The results show the refinement of the microstructure and the subsequent mechanical properties after pressing are independent of the initial size of the sample and, for the largest sample with a diameter of 40 mm, independent of the location within the sample at least to a distance of ∼5 mm from the sample edge. By making direct measurements of the imposed load during ECAP, it is shown that the applied load is determined by the sample strength rather than frictional effects between the sample and the die walls. The results demonstrate the feasibility of scaling ECAP to large sizes for use in industrial applications.

Original languageEnglish
Pages (from-to)34-41
Number of pages8
JournalMaterials Science and Engineering A
Volume318
Issue number1-2
DOIs
Publication statusPublished - Nov 1 2001

All Science Journal Classification (ASJC) codes

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

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