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Mechanical behavior of alloy AA6111 processed by severe plastic deformation: modeling and experiment
journal contribution
posted on 2007-07-01, 00:00 authored by Y Estrin, K Rhee, Rimma LapovokRimma Lapovok, P F ThomsonAn established dislocation density related, one-internal variable model was used, with some modifications, as a basis for modeling the mechanical response of aluminum alloy AA6111. In addition to conventional rolling, equal channel angular pressing (ECAP) was used to produce a wide range of grain sizes, down to the submicrometer scale. The samples were heat treated before and after both processes to optimize tensile ductility. Implementation of the model to uniaxial tensile response of the conventionally rolled and the ECAP processed materials confirmed its good predictive capability. The model was further used to formulate simple relations between true uniform strain and the constitutive parameters that allow reliable prediction of the uniform elongation.
History
Journal
Journal of engineering materials and technologyVolume
129Issue
3Pagination
380 - 389Publisher
American Society of Mechanical EngineersLocation
New York, N.Y.Publisher DOI
ISSN
0094-4289eISSN
1528-8889Language
engPublication classification
C1.1 Refereed article in a scholarly journalCopyright notice
2007, ASMEUsage metrics
Keywords
annealingstressmodelingelongationdislocationsgrain sizework hardeningdeformationtemperaturestress-strain curvesScience & TechnologyTechnologyEngineering, MechanicalMaterials Science, MultidisciplinaryEngineeringMaterials ScienceAA6111SPDECAPconstitutive modelGRAIN-SIZEALUMINUMCREEPMechanical Engineering
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