Accession Number:

ADA364143

Title:

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

Descriptive Note:

Final rept. Jul 96-Oct 97

Corporate Author:

TEXAS UNIV AT SAN ANTONIO

Report Date:

1997-10-01

Pagination or Media Count:

62.0

Abstract:

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.

Subject Categories:

  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE