Influence of stacking fault energy on the minimum grain size achieved in severe plastic deformation

Y. H. Zhao, Y. T. Zhu, X. Z. Liao, Zenji Horita, Terence G. Langdon

Research output: Contribution to journalArticlepeer-review

100 Citations (Scopus)

Abstract

Samples of pure Cu and a Cu-10% Zn alloy were processed by high-pressure torsion and by high-pressure torsion followed by cold-rolling to a reduction of ∼75%. The grain sizes in these two conditions were measured by transmission electron microscopy and by X-ray diffraction. The experimental results show the average grain size and the width of the grain size distribution are both smaller in the Cu-10% Zn alloy by comparison with pure Cu. This difference is due to the lower stacking fault energy of the Cu-10% Zn alloy. An analysis shows all of the experimental results are consistent with a theoretical model predicting the minimum grain size produced by milling.

Original languageEnglish
Pages (from-to)22-26
Number of pages5
JournalMaterials Science and Engineering A
Volume463
Issue number1-2
DOIs
Publication statusPublished - Aug 15 2007

All Science Journal Classification (ASJC) codes

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

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