Accession Number : ADD014270

Title :   High Temperature Aluminum-Base Alloy.

Descriptive Note : Patent, Filed 13 Feb 89, patented 25 Jul 89,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s) : Mahajan, Yashwant R ; Kim, Young-Won ; Froes, Francis H

Report Date : 25 Jul 1989

Pagination or Media Count : 2

Abstract : In accordance with the present invention, there is provided an improved alloy consisting essentially of about 6 to 10 weight percent Fe and about 3 to 10 weight percent Gd, balance aluminum. In a presently preferred embodiment, the weight ratio of iron to gadolinium is in the range of about 1:1 to 2.2:1. In addition to aluminum, iron and gadolinium, the alloy can contain refractory metals of at least about 0.1 wt. percent and up to about 1.0 wt. percent tungsten, 1.0 wt. percent tantalum, 1.5 wt. percent molybdenum, and/or 1.5 wt. percent niobium. Preferably, the total amount of these strengtheners should not exceed about 5 wt. percent and preferably should not exceed the iron and gadolinium content. The alloys are produced by any of the known rapid solidification processes for producing particulate materials. Suitable processes include gas atomization, drum splat, twin roll atomization, chill block melt spinning, planar flow casting, and the like. Pat-420,550. (jes)

Descriptors :   *ALLOYS, ADDITION, ALUMINUM, ATOMIZATION, BALANCE, CASTING, COOLING, FLOW, GADOLINIUM, GASES, IRON, MATERIALS, MELTS, MOLYBDENUM, NIOBIUM, PARTICULATES, PLANAR STRUCTURES, QUICK REACTION, RATIOS, REFRACTORY METALS, ROLL, SOLIDIFICATION, SPINNING(INDUSTRIAL PROCESSES), TANTALUM, TUNGSTEN, WEIGHT

Subject Categories : Metallurgy and Metallography

Distribution Statement : APPROVED FOR PUBLIC RELEASE