Development of Ultra-Fine Grained Ti and Ti-6Al-4V Alloy by Equal Channel Angular Extrusion

Abstract

This report covers efforts to use equal-channel angular extrusion (ECAE) to produce a fine-grained structure in Ti and Ti-6Al-4V. Both materials were successfully produced. Details of processing and resulting microstructures (phase morphology, grain size, texture, dislocation and twin substructures) are presented and discussed. Ti alloys are a mixture of hexagonal-close-packed and body-centered-cubic crystal structures. Plastic deformation is accommodated by a mixture of dislocation motion and twinning.

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Document Details

Document Type
Technical Report
Publication Date
Feb 21, 2003
Accession Number
ADA427863

Entities

People

  • Dong Hoon Shin

Organizations

  • Hanyang University

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Crystal Structure
  • Crystals
  • Deformation (Mechanics)
  • Diffraction
  • Dislocations
  • Electron Microscopy
  • Extrusion
  • Geometry
  • Grain Boundaries
  • Grain Size
  • Low Angles
  • Materials
  • Materials Engineering
  • Materials Processing
  • Materials Science
  • Microstructure
  • Shear Stresses

Fields of Study

  • Materials science

Readers

  • Powder metallurgy of Titanium alloys.