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

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.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1997
Accession Number
ADA364143

Entities

People

  • Callie C. Bast
  • David L. Crane
  • Ronald L. Bagley

Organizations

  • University of Texas at San Antonio

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Air Force Research Laboratories
  • Composite Materials
  • Crystal Lattices
  • Crystal Structure
  • Differential Equations
  • Engineering
  • Equations
  • Materials
  • Mechanical Properties
  • Mechanics
  • Plastic Deformation
  • Plastic Properties
  • Shear Modulus
  • Shear Stresses
  • Stress Strain Relations
  • Stresses
  • Structural Components

Fields of Study

  • Materials science

Readers

  • Computational Fluid Dynamics (CFD)
  • Materials Science and Engineering.

Technology Areas

  • Space