A polycrystalline model for stress-strain behaviour of tantalum at 300 K

Authors
Frenois, S Munier, E Feaugas, X Pilvin, P
Citation
S. Frenois et al., A polycrystalline model for stress-strain behaviour of tantalum at 300 K, J PHYS IV, 11(PR5), 2001, pp. 301-308
Citations number
27
Categorie Soggetti
Physics
Journal title
JOURNAL DE PHYSIQUE IV
ISSN journal
11554339 → ACNP
Volume
11
Issue
PR5
Year of publication
2001
Pages
301 - 308
Database
ISI
SICI code
1155-4339(200109)11:PR5<301:APMFSB>2.0.ZU;2-E
Abstract
A polycrystalline model is proposed to model the large plastic deformation and texture evolutions in tantalum over a wide range of strain rates at roo m temperature. The mechanical behaviour is discussed in terms of back and e ffective stresses with the help of qualitative and quantitative TEM observa tions. Using these observations, an elasto-visco-plastic formulation for b. c.c. crystals is developed in the thermal activation framework.