Formation of single and multiple deformation twins in nanocrystalline fcc metals

Y. T. Zhu; J. Narayan; J. P. Hirth; S. Mahajan; X. L. Wu; X. Z. Liao

doi:10.1016/j.actamat.2009.04.020

Formation of single and multiple deformation twins in nanocrystalline fcc metals

Y. T. Zhu, J. Narayan^*, J. P. Hirth, S. Mahajan, X. L. Wu, X. Z. Liao

^*Corresponding author for this work

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

184 Citations (Scopus)

Abstract

Deformation twins are often observed to meet each other to form multi-fold twins in nanostructured face-centered cubic (fcc) metals. Here we propose two types of mechanism for the nucleation and growth of four different single and multiple twins. These mechanisms provide continuous generation of twinning partials for the growth of the twins after nucleation. A relatively high stress or high strain rate is needed to activate these mechanisms, making them more prevalent in nanocrystalline materials than in their coarse-grained counterparts. Experimental observations that support the proposed mechanisms are presented. © 2009 Acta Materialia Inc.

Original language	English
Pages (from-to)	3763-3770
Journal	Acta Materialia
Volume	57
Issue number	13
Online published	23 May 2009
DOIs	https://doi.org/10.1016/j.actamat.2009.04.020
Publication status	Published - Aug 2009
Externally published	Yes

Research Keywords

Dislocations
Interfaces
Nanocrystalline materials
Twin boundaries
Twinning

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10.1016/j.actamat.2009.04.020

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title = "Formation of single and multiple deformation twins in nanocrystalline fcc metals",

abstract = "Deformation twins are often observed to meet each other to form multi-fold twins in nanostructured face-centered cubic (fcc) metals. Here we propose two types of mechanism for the nucleation and growth of four different single and multiple twins. These mechanisms provide continuous generation of twinning partials for the growth of the twins after nucleation. A relatively high stress or high strain rate is needed to activate these mechanisms, making them more prevalent in nanocrystalline materials than in their coarse-grained counterparts. Experimental observations that support the proposed mechanisms are presented. {\textcopyright} 2009 Acta Materialia Inc.",

keywords = "Dislocations, Interfaces, Nanocrystalline materials, Twin boundaries, Twinning, Dislocations, Interfaces, Nanocrystalline materials, Twin boundaries, Twinning, Dislocations, Interfaces, Nanocrystalline materials, Twin boundaries, Twinning",

author = "Zhu, {Y. T.} and J. Narayan and Hirth, {J. P.} and S. Mahajan and Wu, {X. L.} and Liao, {X. Z.}",

year = "2009",

month = aug,

doi = "10.1016/j.actamat.2009.04.020",

language = "English",

volume = "57",

pages = "3763--3770",

journal = "Acta Materialia",

issn = "1359-6454",

publisher = "Elsevier Ltd.",

number = "13",

}

TY - JOUR

T1 - Formation of single and multiple deformation twins in nanocrystalline fcc metals

AU - Zhu, Y. T.

AU - Narayan, J.

AU - Hirth, J. P.

AU - Mahajan, S.

AU - Wu, X. L.

AU - Liao, X. Z.

PY - 2009/8

Y1 - 2009/8

N2 - Deformation twins are often observed to meet each other to form multi-fold twins in nanostructured face-centered cubic (fcc) metals. Here we propose two types of mechanism for the nucleation and growth of four different single and multiple twins. These mechanisms provide continuous generation of twinning partials for the growth of the twins after nucleation. A relatively high stress or high strain rate is needed to activate these mechanisms, making them more prevalent in nanocrystalline materials than in their coarse-grained counterparts. Experimental observations that support the proposed mechanisms are presented. © 2009 Acta Materialia Inc.

AB - Deformation twins are often observed to meet each other to form multi-fold twins in nanostructured face-centered cubic (fcc) metals. Here we propose two types of mechanism for the nucleation and growth of four different single and multiple twins. These mechanisms provide continuous generation of twinning partials for the growth of the twins after nucleation. A relatively high stress or high strain rate is needed to activate these mechanisms, making them more prevalent in nanocrystalline materials than in their coarse-grained counterparts. Experimental observations that support the proposed mechanisms are presented. © 2009 Acta Materialia Inc.

KW - Dislocations

KW - Interfaces

KW - Nanocrystalline materials

KW - Twin boundaries

KW - Twinning

KW - Dislocations

KW - Interfaces

KW - Nanocrystalline materials

KW - Twin boundaries

KW - Twinning

KW - Dislocations

KW - Interfaces

KW - Nanocrystalline materials

KW - Twin boundaries

KW - Twinning

UR - http://www.scopus.com/inward/record.url?scp=67649121849&partnerID=8YFLogxK

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-67649121849&origin=recordpage

U2 - 10.1016/j.actamat.2009.04.020

DO - 10.1016/j.actamat.2009.04.020

M3 - RGC 21 - Publication in refereed journal

SN - 1359-6454

VL - 57

SP - 3763

EP - 3770

JO - Acta Materialia

JF - Acta Materialia

IS - 13

ER -

Formation of single and multiple deformation twins in nanocrystalline fcc metals

Abstract

Research Keywords

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