Accession Number : AD0865373

Title :   Strengthening of Fe-Cr-Al-Y Oxidation Resistant Alloys.

Descriptive Note : Final rept. 1 Jan 69-1 Feb 70,

Corporate Author : GENERAL ELECTRIC CO CINCINNATI OH AIRCRAFT ENGINE BUSINESS GROUP

Personal Author(s) : Allen, R. E.

Report Date : 23 JAN 1970

Pagination or Media Count : 56

Abstract : An investigation of oxide dispersion strengthening of oxidation resistant FeCrAlY alloys was conducted using both coarse and fine metal powder approaches. The most successful method involved preoxidizing and extruding Fe-25Cr-4Al-1Y (2541) coarse atomized powders. A detailed thermomechanical processing (TMP) study of this material showed that 2000F tensile and stress rupture properties varied widely with rolling-heat treating schedules. Yield and tensile strengths at 2000F were from 1 to 4.5 times the values for conventional alloy 2541 and 2000F rupture stress at constant Larsen Miller parameter number were from 1 to more than 5.3 times the values for conventional alloy 2541 depending on TMP schedule used.

Descriptors :   (*CORROSION RESISTANT ALLOYS, DISPERSION HARDENING), (*POWDER METALLURGY, CORROSION RESISTANT ALLOYS), STAINLESS STEEL, ALUMINUM ALLOYS, YTTRIUM, HEAT RESISTANT ALLOYS, HEAT RESISTANT METALS, MECHANICAL PROPERTIES, EXTRUSION, HOT PRESSING, COMPACTING.

Subject Categories : Properties of Metals and Alloys

Distribution Statement : APPROVED FOR PUBLIC RELEASE