Cyclic deformation of nanocrystalline and ultrafine-grained nickel

S. Cheng; J. Xie; A. D. Stoica; X. L. Wang; J. A. Horton; D. W. Brown; H. Choo; P. K. Liaw

doi:10.1016/j.actamat.2008.11.011

Cyclic deformation of nanocrystalline and ultrafine-grained nickel

S. Cheng, J. Xie, A. D. Stoica, X. L. Wang, J. A. Horton, D. W. Brown, H. Choo, P. K. Liaw

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

29 Citations (Scopus)

Abstract

The cyclic deformation behavior of ultrafine-grained (UFG) Ni samples synthesized by the electrodeposition method was studied. Different from those made by severely plastic deformation, the UFG samples used in this study are characterized by large-angle grain boundaries. Behaviors from nanocrystalline Ni and coarse-grained Ni samples were compared with that of ultrafine-grained Ni. With in situ neutron diffraction, unusual evolutions of residual lattice strains as well as cyclic hardening and softening behavior were demonstrated during the cyclic deformation. The microstructural changes investigated by TEM are discussed with respect to the unusual lattice strain and cyclic hardening/softening. © 2008 Acta Materialia Inc.

Original language	English
Pages (from-to)	1272-1280
Journal	Acta Materialia
Volume	57
Issue number	4
DOIs	https://doi.org/10.1016/j.actamat.2008.11.011
Publication status	Published - Feb 2009
Externally published	Yes

Research Keywords

Cyclic deformation
Cyclic hardening/softening
Lattice strain
Neutron diffraction
Ultrafine-grained

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10.1016/j.actamat.2008.11.011

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title = "Cyclic deformation of nanocrystalline and ultrafine-grained nickel",

abstract = "The cyclic deformation behavior of ultrafine-grained (UFG) Ni samples synthesized by the electrodeposition method was studied. Different from those made by severely plastic deformation, the UFG samples used in this study are characterized by large-angle grain boundaries. Behaviors from nanocrystalline Ni and coarse-grained Ni samples were compared with that of ultrafine-grained Ni. With in situ neutron diffraction, unusual evolutions of residual lattice strains as well as cyclic hardening and softening behavior were demonstrated during the cyclic deformation. The microstructural changes investigated by TEM are discussed with respect to the unusual lattice strain and cyclic hardening/softening. {\textcopyright} 2008 Acta Materialia Inc.",

keywords = "Cyclic deformation, Cyclic hardening/softening, Lattice strain, Neutron diffraction, Ultrafine-grained",

author = "S. Cheng and J. Xie and Stoica, {A. D.} and Wang, {X. L.} and Horton, {J. A.} and Brown, {D. W.} and H. Choo and Liaw, {P. K.}",

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language = "English",

volume = "57",

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TY - JOUR

T1 - Cyclic deformation of nanocrystalline and ultrafine-grained nickel

AU - Cheng, S.

AU - Xie, J.

AU - Stoica, A. D.

AU - Wang, X. L.

AU - Horton, J. A.

AU - Brown, D. W.

AU - Choo, H.

AU - Liaw, P. K.

PY - 2009/2

Y1 - 2009/2

N2 - The cyclic deformation behavior of ultrafine-grained (UFG) Ni samples synthesized by the electrodeposition method was studied. Different from those made by severely plastic deformation, the UFG samples used in this study are characterized by large-angle grain boundaries. Behaviors from nanocrystalline Ni and coarse-grained Ni samples were compared with that of ultrafine-grained Ni. With in situ neutron diffraction, unusual evolutions of residual lattice strains as well as cyclic hardening and softening behavior were demonstrated during the cyclic deformation. The microstructural changes investigated by TEM are discussed with respect to the unusual lattice strain and cyclic hardening/softening. © 2008 Acta Materialia Inc.

AB - The cyclic deformation behavior of ultrafine-grained (UFG) Ni samples synthesized by the electrodeposition method was studied. Different from those made by severely plastic deformation, the UFG samples used in this study are characterized by large-angle grain boundaries. Behaviors from nanocrystalline Ni and coarse-grained Ni samples were compared with that of ultrafine-grained Ni. With in situ neutron diffraction, unusual evolutions of residual lattice strains as well as cyclic hardening and softening behavior were demonstrated during the cyclic deformation. The microstructural changes investigated by TEM are discussed with respect to the unusual lattice strain and cyclic hardening/softening. © 2008 Acta Materialia Inc.

KW - Cyclic deformation

KW - Cyclic hardening/softening

KW - Lattice strain

KW - Neutron diffraction

KW - Ultrafine-grained

UR - http://www.scopus.com/inward/record.url?scp=59349119391&partnerID=8YFLogxK

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-59349119391&origin=recordpage

U2 - 10.1016/j.actamat.2008.11.011

DO - 10.1016/j.actamat.2008.11.011

M3 - RGC 21 - Publication in refereed journal

SN - 1359-6454

VL - 57

SP - 1272

EP - 1280

JO - Acta Materialia

JF - Acta Materialia

IS - 4

ER -

Cyclic deformation of nanocrystalline and ultrafine-grained nickel

Abstract

Research Keywords

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