Plasticity Initiation and Evolution during Nanoindentation of an Iron–3% Silicon Crystal

Ling Zhang and Takahito Ohmura
Phys. Rev. Lett. 112, 145504 – Published 11 April 2014

Abstract

Our investigations confirm that the collective, avalanchelike dislocation nucleation and multiplication is responsible for the pop-in event in a body-centered-cubic Fe–3% Si single crystal. Dislocation was not observed prior to pop-in but was apparent after the event. We find that a transition from an initial stage dominated by discrete dislocation nucleation to subsequent continuum plasticity occurs just after the pop-in event as elastoplastic deformation ensues.

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  • Received 4 June 2013

DOI:https://doi.org/10.1103/PhysRevLett.112.145504

© 2014 American Physical Society

Authors & Affiliations

Ling Zhang1 and Takahito Ohmura1,2

  • 1Research Center for Strategic Materials, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan
  • 2Center for Elements Strategy Initiative for Structural Materials (ESISM), Kyoto University, Kyoto, 606-8501, Japan

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Vol. 112, Iss. 14 — 11 April 2014

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