File(s) under permanent embargo
Enhanced tensile ductility of an ultra-fine-grained aluminium alloy
journal contribution
posted on 2008-02-01, 00:00 authored by Ilchat Sabirov, Y Estrin, Matthew BarnettMatthew Barnett, Ilana Timokhina, Peter HodgsonPeter HodgsonAluminum alloy 6082 was subjected to equal-channel angular pressing (ECAP), which resulted in an ultra-fine-grained (UFG) microstructure with an average grain size of 0.2–0.4 μm. There was a pronounced effect of the grain refinement on the strain-rate sensitivity and tensile ductility. The Hart criterion of tensile necking fails to explain the observed ductility of the UFG material at low strain rates. A correlation between the observed stronger-than-expected ductility and a tendency to microshear band formation at low strain rates was established.
History
Journal
Scripta MaterialiaVolume
58Issue
3Pagination
163 - 166Publisher
PergamonLocation
Oxford, EnglandPublisher DOI
ISSN
1359-6462eISSN
1872-8456Language
engPublication classification
C1 Refereed article in a scholarly journalCopyright notice
2007, ElsevierUsage metrics
Categories
Keywords
aluminum alloyequal-channel angular pressing (ECAP)shear bandsuniform elongationstrain-rate sensitivityScience & TechnologyTechnologyNanoscience & NanotechnologyMaterials Science, MultidisciplinaryMetallurgy & Metallurgical EngineeringScience & Technology - Other TopicsMaterials ScienceSEVERE PLASTIC-DEFORMATIONNANOSTRUCTURED METALMechanical EngineeringCondensed Matter Physics
Licence
Exports
RefWorks
BibTeX
Ref. manager
Endnote
DataCite
NLM
DC