Effect of stacking fault energy on strength and ductility of nanostructured alloys: An evaluation with minimum solution hardening

Pei Ling Sun, Y. H. Zhao, J. C. Cooley, M. E. Kassner, Zenji Horita, T. G. Langdon, E. J. Lavernia, Y. T. Zhu

Research output: Contribution to journalArticle

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The effect of stacking fault energy (SFE) on the mechanical properties was investigated in Ni-Co alloys which have minimum solution hardening effects. Cobalt reduces the SFE in nickel and this promotes grain refinement during processing and increases the dislocation and twin densities. A reduction in SFE increases strength and tensile ductility. The higher strength is due to grain refinement and higher dislocation and pre-existing twin densities whereas the higher ductility is attributed to a higher work hardening rate.

Original languageEnglish
Pages (from-to)83-86
Number of pages4
JournalMaterials Science and Engineering A
Issue number1-2
Publication statusPublished - Nov 15 2009


All Science Journal Classification (ASJC) codes

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

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