DYMAT 2009
Volume 1, 2009
DYMAT 2009 - 9th International Conference on the Mechanical and Physical Behaviour of Materials under Dynamic Loading
Page(s) 793 - 799
Section Industrial Applications
Published online 15 September 2009
DYMAT 2009 (2009) 793-799
DOI: 10.1051/dymat/2009111

Static and impact-dynamic characterization and modeling of multiphase TRIP steels

J. Van Slycken, J. Bouquerel, P. Verleysen, K. Verbeken, J. Degrieck and Y. Houbaert

Department of Materials Science and Engineering, Ghent University, Ghent, Belgium

Published online: 15 September 2009

In this paper some highlights are presented of an integrated numerical and experimental approach to obtain an in-depth understanding of the high strain rate behavior of materials. The approach is applied to TRansformation Induced Plasticity (TRIP) steels. Phenomenological and microstructurally-based models to describe the established strain rate and temperature dependent behavior are assessed. ‘Classic’ high strain rate tensile experiments using a split Hopkinson tensile bar setup are complemented with strain rate jump tests and tensile tests at elevated temperatures. High strain rate compression and three-point bending experiments are performed as well. These experiments provide additional validation data for the material models. Around room temperature the use of the Johnson-Cook model is most obvious. However, if a wider temperature range has to be covered, only the microstructurally based models give satisfying results. Advanced experimental setups using the Hopkinson principle provide excellent tools for characterizing the material and structural properties of TRIP steels.

© EDP Sciences 2009