Huang, Mingxin and Rivera-Díaz-del-Castillo, Pedro E.J. and Bouaziz, Olivier and van der Zwaag, Sybrand (2009) A constitutive model for high strain rate deformation in FCC metals based on irreversible thermodynamics. Mechanics of Materials, 41 (9). pp. 982-988. ISSN 0167-6636
Full text not available from this repository.Abstract
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.