Journal
INTERNATIONAL JOURNAL OF PLASTICITY
Volume 73, Issue -, Pages 171-183Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijplas.2014.10.009
Keywords
Constitutive behaviour; Microstructures; Strain path change; Polycrystalline material; Mechanical testing
Funding
- US Department of Energy, Office of Basic Energy Science, Division of Materials Science and Engineering [FWP 06SCPE401DOE-BES]
- Portuguese Foundation of Science and Technology [PTDC/EME-TME/105688/2008, PEST-C/EME/UI0481/2011, PEST-C/EME/UI0481/2013]
- Fundação para a Ciência e a Tecnologia [PTDC/EME-TME/105688/2008] Funding Source: FCT
Ask authors/readers for more resources
Two-step tension tests with reloads along different directions are performed on rolled Mg alloy sheet at room temperature. The experimental yield stress at reloading is systematically lower than before unloading. Such a behavior is captured by a microstructure-based hardening model accounting for dislocation reversibility and back-stress. This formulation, embedded in the Visco-Plastic Self-Consistent (VPSC) model, links the dislocation density evolution throughout the deformation with hardening. The predicted results agree well with the experimental data in terms of flow stress response and texture evolution. The effects of texture anisotropy and back-stress on the mechanical response during the strain path change are discussed. (C) 2014 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available