THE DEFORMATION OF PLASTICALLY NON-HOMOGENEOUS MATERIALS.

Abstract

Many two-phase alloys work harden much faster than do pure single crystals. Such alloys are 'plastically non-homogeneous', because gradients of plastic deformation are imposed by the microstructure; dislocations are stored in them to accommodate the deformation gradients, and so allow compatible deformation of the two phases. With the exception of single-phase single crystals, almost all metals and alloys are plastically non-homogeneous. The results of this research indicate that more attention should be given to the non-uniform aspects of plastic deformation, and that a plasticity theory based on dislocation mechanics can be constructed for certain such alloys.

Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1968
Accession Number
AD0681041

Entities

People

  • M. F. Ashby

Organizations

  • Harvard University

Tags

DTIC Thesaurus Topics

  • Continuum Mechanics
  • Crystals
  • Dislocations
  • Materials
  • Mechanics
  • Microstructure
  • Physics
  • Plastic Deformation
  • Plastic Properties
  • Single Crystals

Readers

  • Materials Science and Engineering.