Unconstrained grain boundary sliding in Ni bicrystals shows low strain-rate sensitivity (~0.034) and activation energy of 234 kJ/mol, indicating that high SRS in polycrystals comes from accommodation processes rather than intrinsic sliding.
Wei, Strain rate effects in the ultrafine grain and nanocrystalline regimes— influence on some constitutive responses, J
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Mircomechanical insights into unconstrained grain boundary sliding
Unconstrained grain boundary sliding in Ni bicrystals shows low strain-rate sensitivity (~0.034) and activation energy of 234 kJ/mol, indicating that high SRS in polycrystals comes from accommodation processes rather than intrinsic sliding.