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Size effect on the tensile strength of fine-grained copper
journal contribution
posted on 2008-12-01, 00:00 authored by A Molotnikov, Rimma LapovokRimma Lapovok, C H J Davies, W Cao, Y EstrinWe considered the effect of the thickness of copper sheet on its tensile strength. A model in which the strength of surface grains is governed by dislocation image forces, while that of interior grains is determined by dislocation cell structure, was proposed. Using a rule of mixtures, the dependence of strength on the specimen thickness was calculated. A master curve representing the calculated dependence of normalized strength on the ratio of sheet thickness to grain size was confirmed by experiment.
History
Journal
Scripta materialiaVolume
59Issue
11Pagination
1182 - 1185Publisher
ElsevierLocation
Amsterdam, The NetherlandsPublisher DOI
ISSN
1359-6462Language
engPublication classification
C Journal article; C1.1 Refereed article in a scholarly journalCopyright notice
2008, Acta MaterialiaUsage metrics
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Keywords
constitutive equationscopperstress-strain relationship measurementsthin filmsimage forceScience & TechnologyTechnologyNanoscience & NanotechnologyMaterials Science, MultidisciplinaryMetallurgy & Metallurgical EngineeringScience & Technology - Other TopicsMaterials ScienceTHIN SHEET-METALFLOW-STRESSSTRAINMODELDEFORMATIONPLASTICITYBEHAVIORTEMPERATUREMechanical EngineeringCondensed Matter Physics
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