Accession Number:

ADA123166

Title:

Microstructure and Properties of Powder-Processed Aluminum-Lithium Alloys

Descriptive Note:

Final rept. 1 Apr 1979-31 May 1982

Corporate Author:

MCDONNELL DOUGLAS RESEARCH LABS ST LOUIS MO

Report Date:

1982-05-21

Pagination or Media Count:

77.0

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.

Subject Categories:

  • Properties of Metals and Alloys
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE