Accession Number : ADP005941

Title :   Magnesium Alloy Technology for Aerospace Applications,

Corporate Author : ROYAL AEROSPACE ESTABLISHMENT FARNBOROUGH (UNITED KINGDOM)

Personal Author(s) : Bray, D. J.

Report Date : AUG 1989

Pagination or Media Count : 23

Abstract : Recent developments in magnesium alloy technology for aerospace applications are reviewed. Most of the current requirements are met by cast alloys and two new alloys have been introduced; WE54 for high temperature applications up to 300 deg C, and high purity AZ91 with improved corrosion resistance. Improvements in casting technology permit the manufacture of more complex castings with wall thicknesses as low as 3.5 millimeters. A new polyimide coating has been developed for gearbox casings which resists attack by lubricating oils at temperatures over 200 deg C. Rapidly solidified magnesium alloys are at an early stage of development, but their potential is illustrated by the improvements is mechanical properties and corrosion resistance which have been obtained. Keywords: Alloys, Magnesium, Aerospace applications, Metallurgy, Corrosion inhibition. (JG)

Descriptors :   *AEROSPACE SYSTEMS, *MAGNESIUM ALLOYS, ALLOYS, CASTING, CASTINGS, COATINGS, CORROSION INHIBITION, CORROSION RESISTANCE, HIGH TEMPERATURE, LUBRICATING OILS, MAGNESIUM, MECHANICAL PROPERTIES, METALLURGY, POLYIMIDE RESINS, SOLIDIFICATION, THICKNESS, WALLS.

Subject Categories : Metallurgy and Metallography

Distribution Statement : APPROVED FOR PUBLIC RELEASE