Fundamentals of Mechanical Behavior in Intermetallic Compounds.

Abstract

Research in the first year of this program has examined mechanical behavior and creep of titanium aluminide alloys, both based on Ti3Al and TiAl, with the goal being better understanding of relation ships between microstructure and mechanical properties of these intermetallic compound-based alloys. Detailed microstructural characterization has been conducted for both types of aluminide alloys. For Ta additions to TiAl alloys, which are thought to improve ductility, lowered stacking fault energy and increased twinning have been found. For a Ti3Al-based alloy, detailed stress and temperature dependences of creep have been measured, and a strong microstructural dependence of creep properties has been established.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1991
Accession Number
ADA235016

Entities

People

  • Anthony W. Thompson
  • James M. Howe

Organizations

  • Carnegie Mellon University

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Chemistry
  • Composite Materials
  • Creep
  • Crystal Structure
  • Crystallography
  • Crystals
  • Electron Microscopy
  • Grain Boundaries
  • Heat Treatment
  • Materials
  • Materials Engineering
  • Materials Science
  • Measurement
  • Mechanical Properties
  • Phase Diagrams
  • Phase Transformations
  • Transitions

Fields of Study

  • Materials science

Readers

  • Powder metallurgy of Titanium alloys.