Insights on activation enthalpy for non-Schmid slip in body-centered cubic metals
LM Hale, H Lim, JA Zimmerman, CC Battaile… - Scripta Materialia, 2015 - Elsevier
Scripta Materialia, 2015•Elsevier
We use insights gained from atomistic simulation to develop an activation enthalpy model for
dislocation slip in body-centered cubic iron. Using a classical potential that predicts
dislocation core stabilities consistent with ab initio predictions, we quantify the non-Schmid
stress-dependent effects of slip. The kink-pair activation enthalpy is evaluated and a model
is identified as a function of the general stress state. Our model enlarges the applicability of
the classic Kocks activation enthalpy model to materials with non-Schmid behavior.
dislocation slip in body-centered cubic iron. Using a classical potential that predicts
dislocation core stabilities consistent with ab initio predictions, we quantify the non-Schmid
stress-dependent effects of slip. The kink-pair activation enthalpy is evaluated and a model
is identified as a function of the general stress state. Our model enlarges the applicability of
the classic Kocks activation enthalpy model to materials with non-Schmid behavior.
We use insights gained from atomistic simulation to develop an activation enthalpy model for dislocation slip in body-centered cubic iron. Using a classical potential that predicts dislocation core stabilities consistent with ab initio predictions, we quantify the non-Schmid stress-dependent effects of slip. The kink-pair activation enthalpy is evaluated and a model is identified as a function of the general stress state. Our model enlarges the applicability of the classic Kocks activation enthalpy model to materials with non-Schmid behavior.
Elsevier
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