Abstract
The evolution of polycrystalline microstructures under the driving forces of temperature and stress, i.e., during grain growth and plastic deformation, is controlled by the high-temperature structure and dynamical behavior of grain boundaries (GBs). These microstructural processes, driven by temperature and/or stress, involve three distinct types of dynamical GB phenomena, namely GB diffusion, GB migration and GB sliding. All three are known to depend strongly on the GB energy. A better understanding of microstructural evolution in terms of the behavior of the individual interfaces therefore requires insight on the interrelation among GB structure, GB energy and these dynamical GB processes.
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