Modeling microtwinning during creep in Ni-based superalloys

It has been recently shown that microtwinning is the principal deformation mechanism under certain creep conditions in several polycrystalline nickel-base superalloys. A creep model based on this mechanism is developed in this paper. Model parameters, supplied by microscopy and by atomistic calculations, are used to compare the model against experiment. (c) 2005 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.