Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Modelling plastic deformation of metals over a wide range of strain rates using irreversible thermodynamics
AU - Huang, Mingxin
AU - Rivera-Díaz-Del-Castillo, Pedro E J
AU - Bouaziz, Olivier
AU - Van Der Zwaag, Sybrand
PY - 2009
Y1 - 2009
N2 - Based on the theory of irreversible thermodynamics, the present work proposes a dislocation-based model to describe the plastic deformation of FCC metals over wide ranges of strain rates. The stress-strain behaviour and the evolution of the average dislocation density are derived. It is found that there is a transitional strain rate (∼ 104 s-1) over which the phonon drag effects appear, resulting in a significant increase in the flow stress and the average dislocation density. The model is applied to pure Cu deformed at room temperature and at strain rates ranging from 10-5 to 106 s-1 showing good agreement with experimental results.
AB - Based on the theory of irreversible thermodynamics, the present work proposes a dislocation-based model to describe the plastic deformation of FCC metals over wide ranges of strain rates. The stress-strain behaviour and the evolution of the average dislocation density are derived. It is found that there is a transitional strain rate (∼ 104 s-1) over which the phonon drag effects appear, resulting in a significant increase in the flow stress and the average dislocation density. The model is applied to pure Cu deformed at room temperature and at strain rates ranging from 10-5 to 106 s-1 showing good agreement with experimental results.
U2 - 10.1088/1757-899X/3/1/012006
DO - 10.1088/1757-899X/3/1/012006
M3 - Journal article
AN - SCOPUS:84893460611
VL - 3
JO - IOP Conference Series: Materials Science and Engineering
JF - IOP Conference Series: Materials Science and Engineering
SN - 1757-8981
M1 - 012006
ER -