Structure Property Relationships in Ti3SiC2

Abstract

The dislocation structure of a typical low angle boundary associated with a kink band in a sample of Ti3SiC2 deformed at room temperature was studied by HRTEM. The boundary had both tilt and twist components. To account for both, the boundary was interpreted to be composed of parallel, alternating, mixed perfect dislocations with two different Burger's vectors lying in the basal plane at an angle of 120 degrees relative to one another. The boundary twist was provided by having an excess of one type of dislocation. The hitherto unreported structure of a low-angle boundary is attributed to the fact that all dislocations are confined to the basal planes.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1999
Accession Number
ADA372428

Entities

People

  • I. Levin
  • L. Farber
  • M. W. Barwoum

Organizations

  • Drexel University

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Air Force
  • Boundaries
  • Crystals
  • Dislocations
  • Electron Microscopes
  • Electron Microscopy
  • High Resolution
  • Low Angles
  • Materials
  • Materials Engineering
  • Mechanical Properties
  • Mechanical Working
  • Microscopes
  • Microscopy
  • Shape
  • Shear Stresses
  • Transmission Electron Microscopy

Readers

  • Materials Science and Engineering.