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

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

doi:10.1016/j.scriptamat.2013.10.014

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

X.H. An, M. Song, Y. Huang, X.Z. Liao^*, S.P. Ringer, T.G. Langdon, Y.T. Zhu

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

47 Citations (Scopus)

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.

Original language	English
Pages (from-to)	35-38
Journal	Scripta Materialia
Volume	72-73
Online published	17 Oct 2013
DOIs	https://doi.org/10.1016/j.scriptamat.2013.10.014
Publication status	Published - Feb 2014
Externally published	Yes

Research Keywords

Grain boundary
Incoherent twin boundary
Nanocrystalline Cu alloy
Twinning

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

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. {\textcopyright} 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.",

keywords = "Grain boundary, Incoherent twin boundary, Nanocrystalline Cu alloy, Twinning, Grain boundary, Incoherent twin boundary, Nanocrystalline Cu alloy, Twinning, Grain boundary, Incoherent twin boundary, Nanocrystalline Cu alloy, Twinning",

author = "X.H. An and M. Song and Y. Huang and X.Z. Liao and S.P. Ringer and T.G. Langdon and Y.T. Zhu",

year = "2014",

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doi = "10.1016/j.scriptamat.2013.10.014",

language = "English",

volume = "72-73",

pages = "35--38",

journal = "Scripta Materialia",

issn = "1359-6462",

publisher = "Acta Materialia Inc",

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TY - JOUR

T1 - Twinning via the motion of incoherent twin boundaries nucleated at grain boundaries in a nanocrystalline Cu alloy

AU - An, X.H.

AU - Song, M.

AU - Huang, Y.

AU - Liao, X.Z.

AU - Ringer, S.P.

AU - Langdon, T.G.

AU - Zhu, Y.T.

PY - 2014/2

Y1 - 2014/2

N2 - 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.

AB - 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.

KW - Grain boundary

KW - Incoherent twin boundary

KW - Nanocrystalline Cu alloy

KW - Twinning

KW - Grain boundary

KW - Incoherent twin boundary

KW - Nanocrystalline Cu alloy

KW - Twinning

KW - Grain boundary

KW - Incoherent twin boundary

KW - Nanocrystalline Cu alloy

KW - Twinning

UR - http://www.scopus.com/inward/record.url?scp=84889101270&partnerID=8YFLogxK

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-84889101270&origin=recordpage

U2 - 10.1016/j.scriptamat.2013.10.014

DO - 10.1016/j.scriptamat.2013.10.014

M3 - RGC 21 - Publication in refereed journal

SN - 1359-6462

VL - 72-73

SP - 35

EP - 38

JO - Scripta Materialia

JF - Scripta Materialia

ER -

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

Abstract

Research Keywords

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