Fundamentals of Mechanical Behavior in Intermetallic Compounds

Abstract

This research program has examined mechanical behavior and creep of titanium aluminide alloys, both based on Ti3Al and TiAl, with the goal being better understanding of relationships 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, 1993
Accession Number
ADA262443

Entities

People

  • Anthony W. Thompson
  • James M. Howe

Organizations

  • Carnegie Mellon University

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Advanced Materials
  • Air Force
  • Chemistry
  • Composite Materials
  • Creep
  • Electron Microscopy
  • Elements
  • Engineered Materials
  • Engineering
  • Heat Treatment
  • High Resolution
  • Intermetallic Compounds
  • Materials
  • Materials Engineering
  • Materials Science
  • Mechanical Properties
  • Titanium Aluminide

Fields of Study

  • Materials science

Readers

  • Powder metallurgy of Titanium alloys.