Shear amorphization of boron suboxide

K. Madhav Reddy, A. Hirata, P. Liu, T. Fujita, T. Goto, M. W. Chen

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

We report for the first time the shear-induced local amorphization of boron suboxide subjected to nanoindentation. The amorphous bands have a width of ∼1-3 nm and a length of 200-300 nm along the (01̄11) crystal plane. We show direct experimental evidence that the amorphous shear bands of boron suboxide are driven from the coalescence of dislocation loops under high shear stresses. These observations provide insights into the microscopic deformation and failure of high-strength and lightweight ceramics.

Original languageEnglish
Pages (from-to)9-12
Number of pages4
JournalScripta Materialia
Volume76
DOIs
Publication statusPublished - 2014 Apr 1

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Keywords

  • Amorphization
  • Boron suboxide ceramic
  • Nanoindentation
  • Transmission electron microscopy

ASJC Scopus subject areas

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

Cite this

Madhav Reddy, K., Hirata, A., Liu, P., Fujita, T., Goto, T., & Chen, M. W. (2014). Shear amorphization of boron suboxide. Scripta Materialia, 76, 9-12. https://doi.org/10.1016/j.scriptamat.2013.12.001