Constitutive Behavior of Model FCC, BCC, and HCP Metals: Experiments, Modeling and Validation
Conference
·
OSTI ID:762249
- Los Alamos National Laboratory
The stress-strain responses of a half-hardened copper and an annealed tantalum as a function of temperature and strain-rate were investigated. The rate-dependent yield stress and work-hardening behavior were described satisfactorily by the Mechanical Threshold Strength (MTS) model which is based on thermally-activated plasticity and evolution. Excellent agreement was obtained comparing experiments and calculations of Taylor cylinder impact tests.
- Research Organization:
- Los Alamos National Lab., NM (US)
- Sponsoring Organization:
- USDOE Office of Defense Programs (DP) (US)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 762249
- Report Number(s):
- LA-UR-98-4891
- Country of Publication:
- United States
- Language:
- English
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