Microstructures and mechanical properties of pure copper deformed severely by equal-channel angular pressing and high pressure torsion

N. Lugo, N. Llorca, J. M. Cabrera, Zenji Horita

Research output: Contribution to journalArticle

145 Citations (Scopus)

Abstract

Pure Cu of 99.98 wt.% purity has been processed at room temperature by diverse techniques of severe plastic deformation, namely equal-channel angular pressing (ECAP), high pressure torsion (HPT) and a combination of both in order to find out the evolution on the microstructural homogeneity for each of the processes and their combination. Starting with a grain size of ∼60 μm, severe plastic deformation has been introduced to the material while maintaining the sample dimensions unchanged through the processes of ECAP and HPT. A significant decrease in grain size was observed by transmission electronic microscopy (TEM). Microtensile and microhardness tests were carried out on the deformed material in the three processing conditions. A significant improvement of the tensile strength was promoted with admissible penalization on ductility.

Original languageEnglish
Pages (from-to)366-371
Number of pages6
JournalMaterials Science and Engineering A
Volume477
Issue number1-2
DOIs
Publication statusPublished - Mar 25 2008

All Science Journal Classification (ASJC) codes

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

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