Macroscopic Twinning Strain in Nanocrystalline Cu

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

29 Scopus Citations
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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)63-69
Journal / PublicationMaterials Research Letters
Volume2
Issue number2
Online published29 Nov 2013
Publication statusPublished - 2014
Externally publishedYes

Link(s)

Abstract

Most deformation twins in nanocrystalline face-centered cubic (NC fcc) metals are reported to produce zero-macrostrain, which is attributed to either random activation of partials (RAP) or cooperative slip of three partials (CSTP). Here, we report that when the RAP mechanism is suppressed, ∼44% twins in NC Cu produced zero-macrostrain via the CSTP mechanism. This indicates that both RAP and CSTP are major mechanisms to generate zero-macrostrain twins. In addition, our results also indicate that stress state affects the twinning mechanism in NC fcc metals, and monotonic activation of partials with the same Burgers vector dominates twin formation under monotonic stress. © 2013 The Author(s). Published by Taylor & Francis.

Research Area(s)

  • Cooperative slip of three partials, Macrostrain, Monotonic activation of partials, Nanocrystalline fcc metals, Random activation of partials, Twinning mechanism

Citation Format(s)

Macroscopic Twinning Strain in Nanocrystalline Cu. / Wu, F.; Zhu, Y.T.; Narayan, J.
In: Materials Research Letters, Vol. 2, No. 2, 2014, p. 63-69.

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

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