The role of deformation microstructure in recovery and recrystallization of heavily strained metals

Publication: Research - peer-reviewConference article – Annual report year: 2012

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The role of deformation microstructure in recovery and recrystallization of heavily strained metals. / Hansen, Niels.

In: Materials Science Forum, Vol. 715-716, 2012, p. 251-258.

Publication: Research - peer-reviewConference article – Annual report year: 2012

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Author

Hansen, Niels / The role of deformation microstructure in recovery and recrystallization of heavily strained metals.

In: Materials Science Forum, Vol. 715-716, 2012, p. 251-258.

Publication: Research - peer-reviewConference article – Annual report year: 2012

Bibtex

@article{7e55d997dd0745459a57b989111220a7,
title = "The role of deformation microstructure in recovery and recrystallization of heavily strained metals",
publisher = "Trans Tech Publications Ltd.",
author = "Niels Hansen",
year = "2012",
doi = "10.4028/www.scientific.net/MSF.715-716.251",
volume = "715-716",
pages = "251--258",
journal = "Materials Science Forum",
issn = "0255-5476",

}

RIS

TY - CONF

T1 - The role of deformation microstructure in recovery and recrystallization of heavily strained metals

A1 - Hansen,Niels

AU - Hansen,Niels

PB - Trans Tech Publications Ltd.

PY - 2012

Y1 - 2012

N2 - Metals deformed to high and ultrahigh strains are characterized by a nanoscale microstructure, a large fraction of high angle boundaries and a high dislocation density. Another characteristic of such a microstructure is a large stored energy that combines elastic energy due to dislocations and boundary energy. Parameters of the deformed microstructure significantly affect annealing processes such as recovery and recrystallization. For example, the recovery rate can be significantly increased after high strain deformation and restoration may occur as either discontinuous recrystallization or structural coarsening. A characterization and analysis of deformed and annealed microstructures presented in this work covers Al, Ni, Cu and Fe heavily deformed by rolling, accumulative roll bonding (ARB), equal channel angular extrusion (ECAE) and high pressure torsion (HPT). The important effect of recovery on subsequent restoration processes is discussed along with the effect of heterogeneities both on the local scale and on the sample scale. © (2012) Trans Tech Publications, Switzerland.

AB - Metals deformed to high and ultrahigh strains are characterized by a nanoscale microstructure, a large fraction of high angle boundaries and a high dislocation density. Another characteristic of such a microstructure is a large stored energy that combines elastic energy due to dislocations and boundary energy. Parameters of the deformed microstructure significantly affect annealing processes such as recovery and recrystallization. For example, the recovery rate can be significantly increased after high strain deformation and restoration may occur as either discontinuous recrystallization or structural coarsening. A characterization and analysis of deformed and annealed microstructures presented in this work covers Al, Ni, Cu and Fe heavily deformed by rolling, accumulative roll bonding (ARB), equal channel angular extrusion (ECAE) and high pressure torsion (HPT). The important effect of recovery on subsequent restoration processes is discussed along with the effect of heterogeneities both on the local scale and on the sample scale. © (2012) Trans Tech Publications, Switzerland.

KW - Compressible flow

KW - Grain growth

KW - Recovery

KW - Recrystallization (metallurgy)

KW - Restoration

KW - Roll bonding

KW - Thermodynamic stability

KW - Microstructure

U2 - 10.4028/www.scientific.net/MSF.715-716.251

DO - 10.4028/www.scientific.net/MSF.715-716.251

JO - Materials Science Forum

JF - Materials Science Forum

SN - 0255-5476

VL - 715-716

SP - 251

EP - 258

ER -