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B. Viernstein, E. Kozeschnik:
"Integrated Physical-Constitutive Computational Framework for Plastic Deformation Modeling";
Metals, 10 (2020), 7, paper 869; 14 S.

An integrated framework for deformation modeling has been developed, which combines
a physical state parameter-based formulation for microstructure evolution during plastic deformation
processes with constitutive creep models of polycrystalline materials. The implementations of power
law, Coble, Nabarro-Herring and Harper-Dorn creep and grain boundary sliding are described
and their contributions to the entire stress response at a virtual applied strain rate are discussed.
The present framework simultaneously allows calculating the plastic deformation under prescribed
strain rate or constant stress, as well as stress relaxation after preceding stress or strain loading.
The framework is successfully applied for the construction of deformation mechanism maps.

creep; dislocations; microstructure; relaxation

http://dx.doi.org/10.3390/met10070869