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 - A thermostatistical theory for solid solution effects in the hot deformation of alloys
T2 - An application to low-alloy steels
AU - Galindo-Nava, E. I.
AU - Perlade, A.
AU - Rivera-Díaz-Del-Castillo, P. E.J.
PY - 2014/1
Y1 - 2014/1
N2 - The hot deformation of low-alloy steels is described by a thermostatistical theory of plastic deformation. This is based on defining a statistical entropy term that accounts for the energy dissipation due to possible dislocation displacements. In this case, dilute substitutional and interstitial atom effects alter such paths. The dislocation population is described by a single parameter equation, with the parameter being the average dislocation density. Solute effects incorporate additional dislocation generation sources. They alter the energy barriers corresponding to the activation energies for dislocation recovery, grain nucleation and growth. The model is employed to describe work hardening and dynamic recrystallization softening in fifteen steels for a wide range of compositions, temperatures and strain rates. Maps for dynamic recrystallization occurrence are defined in terms of processing conditions and composition.
AB - The hot deformation of low-alloy steels is described by a thermostatistical theory of plastic deformation. This is based on defining a statistical entropy term that accounts for the energy dissipation due to possible dislocation displacements. In this case, dilute substitutional and interstitial atom effects alter such paths. The dislocation population is described by a single parameter equation, with the parameter being the average dislocation density. Solute effects incorporate additional dislocation generation sources. They alter the energy barriers corresponding to the activation energies for dislocation recovery, grain nucleation and growth. The model is employed to describe work hardening and dynamic recrystallization softening in fifteen steels for a wide range of compositions, temperatures and strain rates. Maps for dynamic recrystallization occurrence are defined in terms of processing conditions and composition.
KW - austenite
KW - dislocation theory
KW - dynamic recrystallization
KW - grain growth
KW - low-alloy steels
KW - solid solution strengthening
KW - statistical thermodynamics
U2 - 10.1088/0965-0393/22/1/015009
DO - 10.1088/0965-0393/22/1/015009
M3 - Journal article
AN - SCOPUS:84891443388
VL - 22
JO - Modelling and Simulation in Materials Science and Engineering
JF - Modelling and Simulation in Materials Science and Engineering
SN - 0965-0393
IS - 1
M1 - 015009
ER -