Strain rate dependency of dislocation plasticity

H Fan, Q Wang, JA El-Awady, D Raabe… - Nature …, 2021 - nature.com
dislocation dynamics and molecular dynamics simulations, we investigate the strain rate and
dislocation density dependence … , dislocation density, strain rate and dislocation mobility is …

A dislocation-based multi-rate single crystal plasticity model

BL Hansen, IJ Beyerlein, CA Bronkhorst… - … Journal of Plasticity, 2013 - Elsevier
… , and strain rate dependence has been formulated based on dislocation dynamics simulations
… This article develops a model for deformation of a single crystal volume at strain rates from …

Strain rate sensitivity and evolution of dislocations and twins in a twinning-induced plasticity steel

ZY Liang, X Wang, W Huang, MX Huang - Acta Materialia, 2015 - Elsevier
… A constitutive model which is strain rate- and temperature-dependent is developed to explain
the stable ISRS and the negative SRSW. The modelling results reveal that the stable ISRS …

A multi-scale model of dislocation plasticity in α-Fe: Incorporating temperature, strain rate and non-Schmid effects

H Lim, LM Hale, JA Zimmerman, CC Battaile… - … Journal of Plasticity, 2015 - Elsevier
… to simulate plastic deformation of single … strain rate on the flow behavior of siangle crystal
Fe. Furthermore, our proposed CP-FE model exhibits temperature and strain rate dependent

Machine learning reveals strain-rate-dependent predictability of discrete dislocation plasticity

M Mińkowski, D Kurunczi-Papp, L Laurson - Physical Review Materials, 2022 - APS
strains the predictability vs strain rate relation becomes nonmonotonic. We show that for small
strains the rate dependence of deformation … the fraction of dislocations moving against the …

On the strain rate sensitivity of size-dependent plasticity in BCC iron at elevated temperatures: discrete dislocation dynamics investigation

P El Ters, MA Shehadeh - Mechanics of Materials, 2020 - Elsevier
… the temperature and strain rate dependency on size exponent at 0.5% strain offset to …
strain rate and is drag operated instead of line tension operated as in the lower strain rates; …

A crystal plasticity based strain rate dependent model across an ultra-wide range

X Sun, K Zhou, C Liu, X Zhang, H Wang… - … Journal of Plasticity, 2024 - Elsevier
… Our CP model yields distinct, quantifiable insights into the relationship between dislocation
activities and variables such as strain rate, strain magnitude, and crystallographic orientation. …

Strain-rate dependent crystal plasticity model and aluminum softening/hardening transition

C Ye, G Liu, K Chen, J Liu, J Hu, Y Yu, Y Mao… - Computational Materials …, 2023 - Elsevier
… Taking aluminum as a model material, we investigate the strain rate and dislocation density
dependence of the strength and the accompanying hardening or softening effect upon a …

Strain rate-dependent plastic behavior of TWIP steel investigated by crystal plasticity model

X Guo, N Mao, T Kong, J Zhang, J Shen… - Materials Science and …, 2024 - Elsevier
… The developed model captures the effect of strain rate on the mechanisms governing
dislocation motion and temperature rise. The mechanical behavior and underlying micro-…

Temperature and strain-rate dependence of surface dislocation nucleation

T Zhu, J Li, A Samanta, A Leach, K Gall - Physical Review Letters, 2008 - APS
… In conclusion, the present work addresses the surface dislocation nucleation aspect of small
scale plasticity. We find surface sources have a unique kinetic signature: a small activation …