Accession Number:

ADP005937

Title:

High Performance Powder Metallurgy Aluminum Alloys - an Overview,

Descriptive Note:

Corporate Author:

DREXEL UNIV PHILADELPHIA PA DEPT OF MATERIALS ENGINEERING

Personal Author(s):

Report Date:

1989-08-01

Pagination or Media Count:

18.0

Abstract:

The historic development of aluminum powder metallurgy dates back to the early 1900s with initial flake powder production and has matured to the present day production of viable aerospace alloys. Primary powder production and processing techniques, such as atomization and mechanical alloying are reviewed. Processing-microstructure-property relationships in four classes of high performance powder metallurgy PM aluminum alloys are considered. These are Aluminum-Iron-Cobalt, Aluminum-Iron-Nickel high strength alloys Aluminum-Zinc-Magnesium, copper-cobalt high specific modulus alloys Aluminum-Lithium-Copper high temperature alloys Aluminium-Iron-Cobalt, Aluminum-Iron-Nickel mechanically alloyed material Aluminum-Magnesium and composite alloys. Direct property comparisons with counterpart ingot metallurgy alloys are presented where ever appropriate. Aluminum powder metallurgy alloy development is now at a mature stage of growth where commercial and aerospace application are being sought and developed in competition with traditional aluminum ingot metallurgy, titanium and composite structures. The future growth and development of these alloy systems is vested in reliable economic processing. Keywords Alloys, High performance powder metallurgy, Production techniques, Microstructures, Processing. JG

Subject Categories:

  • Properties of Metals and Alloys

Distribution Statement:

APPROVED FOR PUBLIC RELEASE