Grain size dependence of the plastic deformation kinetics in Cu

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Environmentally-assisted grain boundary attack as a mechanism of embrittlement in a nickel-based superalloy (2017, background): “For rate-dependent deformation process of the Coble-creep type the strain-rate dependence would be expected to be higher (m z 1 [48]) and the activation volume would be of order the atomic spacing (DVz1 b3 [49]).”
Mechanical properties of high-entropy alloys with emphasis on face-centered cubic alloys (2019, background): “Specifically, it changes in the range of ∼100 b3 to 1000 b3 for dislocation glide in fcc materials, down to ∼b3 for diffusion either along the grain boundaries or through the crystalline lattice [85].”
Mechanics of Solids and Materials (2006, background): “A summary of literature data (Carreker and Hibbard, 1953; Gray et al., 1997; Follansbee and Kocks, 1988; Conrad and Narayan, 2000; Conrad, 2003; Schwaiger et al., 2003; Wei P1: JzG 052177777Xc27.tex CB988/Asaro.cls 0 521 85979 4 November 13, 2005 3:46 27.6.”
Nano-sized twins induce high rate sensitivity of flow stress in pure copper (2005, unknown): “004 and only a weak grain size dependence of m has been found for the dislocation mechanism [33].”
Mechanistic models for the activation volume and rate sensitivity in metals with nanocrystalline grains and nano-scale twins (2005, methodology): “A summary of available data [5,8–11,28,35–41] on the effect of grain size on the activation volume of Cu and Ni is shown in Fig.”