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Strain rate effect of high purity aluminum single crystals: experiments and simulations
journal contribution
posted on 2015-04-01, 00:00 authored by A S Khan, J Liu, Jeong YoonJeong Yoon, R NamboriIn order to study the strain rate effect on single crystal of aluminum (99.999% purity), aluminum single crystals are fabricated and subjected to uniaxial compression loading at quasi-static and dynamic strain rates, i.e., from 10-4 s-1 to 1000 s-1. The orientation dependence is also investigated with single slip or multi slip. The stress-strain curves of pure Al single crystals along two orientations and at different strain rates are obtained after measuring initial orientation using the Laue Back-Reflection technique. Crystal Plasticity Finite Element Method (CPFEM) with three different single crystal plasticity constitutive models is used to simulate the deformations along two orientations under various strain-rates. The classical and two newly developed single crystal plasticity models are used in the investigation. The simulation results of these models are compared to experimental results in order to study their abilities to predict finite plastic deformation of single crystalline metal over a wide strain rate range.
History
Journal
International journal of plasticityVolume
67Pagination
39 - 52Publisher
ElsevierLocation
Amsterdam, The NetherlandsPublisher DOI
ISSN
0749-6419Language
engPublication classification
C Journal article; C1 Refereed article in a scholarly journalCopyright notice
2015, ElsevierUsage metrics
Keywords
Science & TechnologyTechnologyEngineering, MechanicalMaterials Science, MultidisciplinaryMechanicsEngineeringMaterials ScienceDislocationsConstitutive behaviorCrystal plasticityFinite elementsPOLYCRYSTAL PLASTICITY MODELHIGH-TEMPERATURE DEFORMATIONDISLOCATION DENSITYMECHANICAL RESPONSECONSTITUTIVE MODELTENSILE DEFORMATIONTEXTURE EVOLUTIONLOCALIZED DEFORMATIONGRAIN-BOUNDARIESHARDENING STAGESMechanical Engineering
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