AIP conference proceedings · 2006 · 13 citations · 6 references
Natural SciencesMaterials EngineeringMaterials ScienceMechanical Behavior Of MaterialsSolid MechanicsStructural MaterialsMechanical CharacterizationSteel MaterialsSteel StructuresStrain AnalysisStrain HardeningStrength PropertiesFlow StressFlow Stress EvolutionFlow Stress ModelingHardening ResponseHopkinson Bar TestingMechanical Properties Of SteelsNeckingSteels
High strength steels, VascoMax 300 and 1080, are characterized under tension at strain rates of ∼1/s, ∼500/s, ∼1000/s, and ∼1500/s and at high temperatures using the quasi‐static and split Hopkinson bar techniques. The data on 1080 steel exhibited a typical strain hardening response, whereas Vasco‐Max 300 steel showed diminishing flow stress beyond yielding because of localized necking in gauge section of the tested specimens. The tension data are analyzed to determine the Johnson‐Cook (J‐C) strength model constants for the two steels. The flow stress values for VascoMax are adjusted to account for necking, and the corrected J‐C model is developed.
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