Microstructural Theory of Plastic Deformation in Face-Centered-Cubic Materials

摘要

In this investigation, theoretical expression are developed for the threshold stress of plastic deformation and for the periodic spacing of deformation-induced dislocation microstructure in face-centered cubic materials. The process of plastic deformation in these materials, dislocation cross-slip, is modeled on the micro-scale (10-6m). This micro-scale mode is transformed into a macro-scale (structural component scale) engineering tool using the homogenization process, a form of volume averaging. The predicted flow stresses and periodic spacings compare very favorably with measured data.