Deformation twinning during nanoindentation of nanocrystalline Ta

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

  • Y. M. Wang
  • A. M. Hodge
  • J. Biener
  • A. V. Hamza
  • D. E. Barnes
  • Kai Liu

Detail(s)

Original languageEnglish
Article number101915
Pages (from-to)1-3
Journal / PublicationApplied Physics Letters
Volume86
Issue number10
Publication statusPublished - 7 Mar 2005
Externally publishedYes

Abstract

The deformation mechanism of body-centered cubic (bcc) nanocrystalline tantalum with grain sizes of 10-30 nm is investigated by nanoindentation, scanning electron microscopy and high-resolution transmission electron microscopy. In a deviation from molecular dynamics simulations and existing experimental observations on other bcc nanocrystalline metals, the plastic deformation of nanocrystalline Ta during nanoindentation is controlled by deformation twinning. The observation of multiple twin intersections suggests that the physical mechanism of deformation twinning in bcc nanocrystalline materials is different from that in face-centered cubic (fcc) nanocrystalline metals. © 2005 American Institute of Physics.

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Citation Format(s)

Deformation twinning during nanoindentation of nanocrystalline Ta. / Wang, Y. M.; Hodge, A. M.; Biener, J. et al.
In: Applied Physics Letters, Vol. 86, No. 10, 101915, 07.03.2005, p. 1-3.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review