| Numéro |
J. Phys. IV France
Volume 134, August 2006
EURODYMAT 2006 - 8th International Conference on Mechanical and Physical Behaviour of Materials under Dynamic Loading
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|
|---|---|---|
| Page(s) | 1301 - 1306 | |
| DOI | https://doi.org/10.1051/jp4:2006134197 | |
| Publié en ligne | 26 juillet 2006 | |
EURODYMAT 2006 - 8th International Conference on Mehanical and Physical Behaviour of Materials under Dynamic Loading
J. Cirne, R. Dormeval, et al.
J. Phys. IV France 134 (2006) 1301-1306
DOI: 10.1051/jp4:2006134197
Tampere University of Technology, Institute of Materials Science, POB 589, 33101 Tampere, Finland
Published online: 26 July 2006
© EDP Sciences 2006
J. Cirne, R. Dormeval, et al.
J. Phys. IV France 134 (2006) 1301-1306
DOI: 10.1051/jp4:2006134197
Characterization of strain rate and temperature dependent mechanical behavior of TWIP steels
M. Hokka, V.-T. Kuokkala, S. Curtze, T. Vuoristo and M. ApostolTampere University of Technology, Institute of Materials Science, POB 589, 33101 Tampere, Finland
Published online: 26 July 2006
Abstract
Two grades of high manganese TWIP steels with aluminum,
silicon, and chromium additions were prepared and studied by mechanical
testing and electron microscopy. A high/low temperature Hopkinson Split Bar
equipment was designed and built to enable the characterization of the
mechanical behavior of the test materials in the temperature range of –150
to
C at strain rates ranging from 10 - 4 to 104 s - 1. Dislocation and twin structures were investigated by transmission
electron microscopy. Increasing strain rate was found to increase the number
of twins in the microstructure and to lower the critical strain at which
twinning starts to control the deformation and hardening behavior of the
studied TWIP steels.
© EDP Sciences 2006