Modeling compressive flow behavior of a tungsten heavy alloy at different strain rates and temperatures

Journal Article · Fri Jul 10 04:00:00 EDT 1998 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.55486· OSTI ID:21185631

Weerasooriya, Tusit ^[1]

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1. Material Division, Army Research Laboratory, Aberdeen Proving Ground, Maryland 21005 (United States)

Room temperature stress-strain behavior was obtained for a tungsten heavy alloy at 9000, 0.1 and 0.0001/s strain rates. In addition, at the strain rate of 0.1/s, stress-strain data were obtained at 423 deg. K, 573 deg. K and 732 deg. K. Deformation behavior was modeled using standard and modified Johnson-Cook (JC) and Power-Law (PL) models. In the modified models, the temperature terms are replaced by other functions that are proposed in the literature for these models as well as by Arrhenius type exponential functions. The best representation of the data was obtained from modified models with the exponential temperature functions. The model constants were determined using slow rate stress-strain data and the high rate yield stress. This paper presents the modified JC and PL models and the corresponding model constants for the tungsten heavy alloy.

• OSTI ID: 21185631
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 429; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
COMPUTERIZED SIMULATION
DEFORMATION
MATHEMATICAL MODELS
PLASTICITY
STRAIN RATE
STRAINS
STRESSES
TEMPERATURE DEPENDENCE
TUNGSTEN
TUNGSTEN ALLOYS