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Mechanical behavior of alloy AA6111 processed by severe plastic deformation: modeling and experiment
journal contributionposted on 2007-07-01, 00:00 authored by Y Estrin, K Rhee, Rimma Lapovok, P F Thomson
An 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.
JournalJournal of engineering materials and technology
Pagination380 - 389
PublisherAmerican Society of Mechanical Engineers
LocationNew York, N.Y.
Publication classificationC1.1 Refereed article in a scholarly journal
Copyright notice2007, ASME
annealingstressmodelingelongationdislocationsgrain sizework hardeningdeformationtemperaturestress-strain curvesScience & TechnologyTechnologyEngineering, MechanicalMaterials Science, MultidisciplinaryEngineeringMaterials ScienceAA6111SPDECAPconstitutive modelGRAIN-SIZEALUMINUMCREEPMechanical Engineering