DYMAT 2009
Volume 1, 2009
DYMAT 2009 - 9th International Conference on the Mechanical and Physical Behaviour of Materials under Dynamic Loading
Page(s) 647 - 653
Section Experimental Techniques
Published online 15 September 2009
DYMAT 2009 (2009) 647-653
DOI: 10.1051/dymat/2009092

Dynamic behavior of UFG aluminum at a wide range of strain rates and temperatures in compression and tension

J. Kokkonen, V.-T. Kuokkala and M. Isakov

Tampere University of Technology, POB 589, 33101 Tampere, Finland

Published online: 15 September 2009

The dynamic behavior of ultrafine-grained (UFG) and coarse-grained (CG) commercially pure aluminum was investigated at strain rates ranging from 3×10−4 to 3000 s−1 at temperatures of −50, 22 (RT) and 80°C. Constant strain rate tests in tension were used to determine the apparent strain rate sensitivities of the materials, while the instantaneous strain rate sensitivities at low strain rates were obtained from strain rate jump tests in compression. Notable differences in both apparent and instantaneous strain rate dependences of the studied materials were observed at the tested temperature range.

© EDP Sciences 2009