Ambient Temperature Properties of PM (Powder Metal) Aluminum-Titanium Alloys

Abstract

The structure and properties of dispersion strengthened aluminum 4 and 6 weight percent titanium powder alloys were investigated as candidate materials for high temperature performance. Alloy rod was extruded from vacuum hot pressed billets of helium gas atomized, mechanically alloyed, and atomized plus mechanically alloyed powder. Microstructure and mechanical properties were fully characterized to assess the effect of disperoids on alloy strength, ductility, notch toughness, and modulus. The alloys exhibited low density (2.8g/ cm3), high modulus (85 GPa), good ductility (12%), and strength equivalent to Al-Fe-Ce alloys, e.g., 120 MPa at 250-300 C.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1988
Accession Number
ADA205997

Entities

People

  • Michael J. Koczak
  • William E. Frazier

Organizations

  • Naval Air Warfare Center Warminster

Tags

Communities of Interest

  • Air Platforms
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Aircrafts
  • Chemical Synthesis
  • Chemistry
  • Crystal Structure
  • Electron Microscopy
  • Grain Size
  • Materials
  • Materials Engineering
  • Materials Processing
  • Mechanical Properties
  • Mechanical Working
  • Mechanics
  • Microscopy
  • Modulus Of Elasticity
  • Particle Size
  • Tensile Properties
  • Tensile Strength

Fields of Study

  • Materials science

Readers

  • Powder metallurgy of Titanium alloys.