We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
An elastic-viscoplastic constitutive model for the hot-forming of aluminum alloys.
- Authors
Santhanam, S.
- Abstract
Under hot-forming conditions characterized by high homologous temperatures and strain-rates, metals usually exhibit rate-dependent inelastic behavior. An elastic-viscoplastic constitutive model is presented here to describe metal behavior during hot-forming. The model uses an isotropic internal variable to represent the resistance offered to plastic deformation by the microstructure. Evolution equations are developed for the inelastic strain and the deformation resistance based on experimental results. A methodology is presented for extracting model parameters from constant true strain-rate compression tests performed at different temperatures. Model parameters are determined for an Al-1Mn alloy and an Al-Mg-Si alloy, and the predictions of the model are shown to be in good agreement with the experimental data.
- Subjects
ALUMINUM alloys; HOT working of metals; MATERIALS compression testing; VISCOPLASTICITY; ELASTIC properties of metals; MICROSTRUCTURE
- Publication
Journal of Materials Science, 2000, Vol 35, Issue 14, p3647
- ISSN
0022-2461
- Publication type
Article
- DOI
10.1023/A:1004882001651