Accession Number : AD0902087

Title :   Strengthening of FeCrAlY Oxidation Resistant Alloys.

Descriptive Note : Final rept. 1 Jan 71-29 Feb 72,

Corporate Author : GENERAL ELECTRIC CO CINCINNATI OH MATERIAL AND PROCESS TECHNOLOGY LABS

Personal Author(s) : Allen, R. E. ; Perkins, R. J.

Report Date : 27 APR 1972

Pagination or Media Count : 64

Abstract : An investigation of oxide dispersion ostrengthening (ODS) of oxidation resistant FeCrAlY alloys was conducted using argon atomized prealloyed powders and a modified SAP technique. The program had two objectives: first to produce 12-in. wide sheet from the best alloy developed previously, and second, to further develop alloy composition and thermomechanical processing in efforts to improve stress rupture properties to the level exhibited by TD NiCr sheet. Stress rupture data generated on 12-in. wide sheet were better than was obtained previously on small samples. In addition, longitudinal and transverse stress rupture properties of ODS FeCrAlY compared favorably with TD NiCr transverse properties. Rupture stress of ODS FeCrAlY bar was almost 80% higher than that observed in sheet. Long time (10,000 hours) hot corrosion testing at 1600 F and 1800 F indicates that ODS FeCrAlY is extremely resistant to attack.

Descriptors :   (*IRON ALLOYS, DISPERSION HARDENING), (*CORROSION RESISTANT ALLOYS, DISPERSION HARDENING), OXIDES, CHROMIUM ALLOYS, ALUMINUM ALLOYS, YTTRIUM COMPOUNDS, ARGON, SINTERING, SHEETS, STRESSES, RUPTURE, CORROSION, POWDER ALLOYS, HIGH TEMPERATURE, CORROSION RESISTANCE, OXIDATION, POWDER METALLURGY, EXTRUSION, PRESS FORGING, TENSILE PROPERTIES, THERMAL EXPANSION, STABILITY, METAL JOINTS.

Subject Categories : Properties of Metals and Alloys

Distribution Statement : APPROVED FOR PUBLIC RELEASE