Twinning via the motion of incoherent twin boundaries nucleated at grain boundaries in a nanocrystalline Cu alloy

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • X.H. An
  • M. Song
  • Y. Huang
  • X.Z. Liao
  • S.P. Ringer
  • T.G. Langdon

Detail(s)

Original languageEnglish
Pages (from-to)35-38
Journal / PublicationScripta Materialia
Volume72-73
Online published17 Oct 2013
Publication statusPublished - Feb 2014
Externally publishedYes

Abstract

We report the formation of deformation twins in a nanocrystalline Cu-25 at.% Ni alloy with medium stacking fault energy via the propagation of Σ3{1 1 2} incoherent twin boundaries (ITBs) that are nucleated from grain boundaries. This deformation twinning process does not generate net macroscopic strain since the Burgers vectors of the three partial dislocations on three successive {1 1 1} planes comprising an ITB sum to zero. The moving direction of ITBs determines the occurrence of twinning or detwinning in nanocrystalline materials. © 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

Research Area(s)

  • Grain boundary, Incoherent twin boundary, Nanocrystalline Cu alloy, Twinning

Citation Format(s)

Twinning via the motion of incoherent twin boundaries nucleated at grain boundaries in a nanocrystalline Cu alloy. / An, X.H.; Song, M.; Huang, Y.; Liao, X.Z.; Ringer, S.P.; Langdon, T.G.; Zhu, Y.T.

In: Scripta Materialia, Vol. 72-73, 02.2014, p. 35-38.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review