Microstructure and Properties of Powder-Processed Aluminum-Lithium Alloys
Final rept. 1 Apr 1979-31 May 1982
MCDONNELL DOUGLAS RESEARCH LABS ST LOUIS MO
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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.
- Properties of Metals and Alloys
- Fluid Mechanics