On Microstructural Theory of Plastic Deformation in Face-Centered-Cubic Materials
Final rept. Jul 96-Oct 97
TEXAS UNIV AT SAN ANTONIO
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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.