Effects of Schmid factor and slip nucleation on deformation mechanism in columnar-grained nanotwinned Ag and CuJournal of Applied Physics
Publication VersionPublished Version
AbstractWe report the results of a molecular dynamics study of the effect of texture on the yield and peak stresses in columnar-grained nanotwinned Ag and Cu. The simulations suggest that in pure nanotwinned face-centered cubic metals, the strength is determined primarily by the cooperation or competition between two major factors: the magnitude of the Schmid factors for the available slip systems and the effectiveness of grain boundaries (and their triple-junctions) in generating dislocations. These factors and their relative impact depend on the geometry of the specimen relative to the applied stress, which is typically reflected in the texture of the material in experimental studies. The detailed mechanisms of plastic deformation are discussed for seven specific geometries that represent a range of different textures.
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Copyright OwnerAmerican Institute of Physics
Citation InformationValery Borovikov, Mikhail I. Mendelev, Alexander H. King and Richard Lesar. "Effects of Schmid factor and slip nucleation on deformation mechanism in columnar-grained nanotwinned Ag and Cu" Journal of Applied Physics Vol. 117 Iss. 8 (2015) p. 085302
Available at: http://works.bepress.com/richard_lesar/55/