Deformation behavior of Mo5SiB2

N. I. Medvedeva, O. Y. Kontsevoi, A. J. Freeman, J. H. Perepezko

Research output: Contribution to journalArticle

2 Citations (Scopus)


First-principles calculations were employed to analyze the possible slip systems in Mo5SiB2. A striking result was obtained that the three most favorable slip systems, <100>(001), <110>(001) and [001]{010}, have close stacking fault energies, and the preference among them cannot be established. This finding explains a large variety of experimentally observed slip systems in Mo5SiB2. The dislocations associated with these slip systems may dissociate into partials joined with stacking faults and separated by the large splitting width of 5–6 nm.

Original languageEnglish
Pages (from-to)54-57
Number of pages4
Publication statusPublished - Nov 2017


  • Ab initio calculations
  • Dislocations
  • Molybdenum silicides
  • Stacking fault energy

ASJC Scopus subject areas

  • Chemistry(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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  • Cite this

    Medvedeva, N. I., Kontsevoi, O. Y., Freeman, A. J., & Perepezko, J. H. (2017). Deformation behavior of Mo5SiB2. Intermetallics, 90, 54-57.