Microstructure and Properties of Powder-Processed Aluminum-Lithium Alloys

Abstract

The overall objectives of this research program were to determine the source of brittleness in Al-Li alloys, determine ductility enhancement through slip homogenization effected by grain refinement and incoherent dispersoids, compare the properties of Al-Li alloys prepared from different types of rapidly solidified powders with the properties of cast Al-Li alloys and other commercial high-strength Al alloys, and identify and recommend for further development promising Al-Li alloy compositions for use in aircraft structures. The approach followed was that of rapid solidification and powder-processing, which result in significant microstructural refinement and make possible the processing of novel Al-Li alloy compositions not amenable to ingot-casting methods.

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Document Details

Document Type
Technical Report
Publication Date
May 21, 1982
Accession Number
ADA123166

Entities

People

  • J. E. O'neal
  • K. K. Sankaran
  • P. J. Meschter
  • S. M. Sastry

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Alloys
  • Binary Alloys
  • Chemical Synthesis
  • Chemistry
  • Dispersions
  • Grain Boundaries
  • Grain Size
  • Heat Energy
  • Heat Treatment
  • Materials
  • Materials Science
  • Mechanical Properties
  • Mechanical Working
  • Particles
  • Solid Solutions
  • Tensile Properties
  • Tensile Strength

Fields of Study

  • Materials science

Readers

  • Powder metallurgy of Titanium alloys.