Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
}
TY - JOUR
T1 - A constitutive model for high strain rate deformation in FCC metals based on irreversible thermodynamics
AU - Huang, Mingxin
AU - Rivera-Díaz-del-Castillo, Pedro E.J.
AU - Bouaziz, Olivier
AU - van der Zwaag, Sybrand
PY - 2009/9
Y1 - 2009/9
N2 - The present work extends a recent model for plastic deformation of polycrystalline metals based on irreversible thermodynamics. A general dislocation evolution equation is derived for a wide range of strain rates. It is found that there is a transitional strain rate (∼103 s-1) over which the phonon drag effects play a dominant role in dislocation generation resulting in a significant raise in the dislocation density and flow stress. The model reduces to the classical Kocks-Mecking model at low strain rates.
AB - The present work extends a recent model for plastic deformation of polycrystalline metals based on irreversible thermodynamics. A general dislocation evolution equation is derived for a wide range of strain rates. It is found that there is a transitional strain rate (∼103 s-1) over which the phonon drag effects play a dominant role in dislocation generation resulting in a significant raise in the dislocation density and flow stress. The model reduces to the classical Kocks-Mecking model at low strain rates.
U2 - 10.1016/j.mechmat.2009.05.007
DO - 10.1016/j.mechmat.2009.05.007
M3 - Journal article
AN - SCOPUS:67949111043
VL - 41
SP - 982
EP - 988
JO - Mechanics of Materials
JF - Mechanics of Materials
SN - 0167-6636
IS - 9
ER -