Effects of alloy composition on cyclic flame hot-corrosion attack of cast nickel-base superalloys at 900 deg C
Technical Report
·
OSTI ID:6468331
The effects of Cr, Al, Ti, Mo, Ta, Nb, and W content on the hot corrosion of nickel base alloys were investigated. The alloys were tested in a Mach 0.3 flame with 0.5 ppmw sodium at a temperature of 900 C. One nondestructive and three destructive tests were conducted. The best corrosion resistance was achieved when the Cr content was 12 wt %. However, some lower-Cr-content alloys ( 10 wt%) exhibited reasonable resistance provided that the Al content alloys ( 10 wt %) exhibited reasonable resistance provided that the Al content was 2.5 wt % and the Ti content was Aa wt %. The effect of W, Ta, Mo, and Nb contents on the hot-corrosion resistance varied depending on the Al and Ti contents. Several commercial alloy compositions were also tested and the corrosion attack was measured. Predicted attack was calculated for these alloys from derived regression equations and was in reasonable agreement with that experimentally measured. The regression equations were derived from measurements made on alloys in a one-quarter replicate of a 2(7) statistical design alloy composition experiment. These regression equations represent a simple linear model and are only a very preliminary analysis of the data needed to provide insights into the experimental method.
- Research Organization:
- National Aeronautics and Space Administration, Cleveland, OH (USA). Lewis Research Center
- OSTI ID:
- 6468331
- Report Number(s):
- N-84-26783; NASA-TP-2338; E-2009
- Country of Publication:
- United States
- Language:
- English
Similar Records
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The effects of Cr, Co, Al, Mo and Ta on the cyclic oxidation behavior of a prototype cast Ni-base superalloy based on a 2 sup 5 composite statistically designed experiment
Thesis/Dissertation
·
Thu Dec 31 23:00:00 EST 1987
·
OSTI ID:5180328
Effects of Mo and Al on hot corrosion (sulfidation) behavior of experimental Ni base superalloys
Journal Article
·
Fri Mar 01 00:00:00 EDT 1974
· Met. Trans., v. 5, no. 3, pp. 673-683
·
OSTI ID:4309304
The effects of Cr, Co, Al, Mo and Ta on the cyclic oxidation behavior of a prototype cast Ni-base superalloy based on a 2 sup 5 composite statistically designed experiment
Conference
·
· TMS (The Metallurgical Society) Paper Selection; (USA)
·
OSTI ID:5249175
Related Subjects
36 MATERIALS SCIENCE
360105* -- Metals & Alloys-- Corrosion & Erosion
ALKALI METAL COMPOUNDS
ALLOYS
ALUMINIUM ADDITIONS
ALUMINIUM ALLOYS
CHEMICAL COMPOSITION
CHROMIUM ADDITIONS
CHROMIUM ALLOYS
COBALT ADDITIONS
COBALT ALLOYS
CORROSION RESISTANCE
DATA
EXPERIMENTAL DATA
INFORMATION
MATHEMATICS
MOLYBDENUM ADDITIONS
MOLYBDENUM ALLOYS
NICKEL ALLOYS
NICKEL BASE ALLOYS
NIOBIUM ADDITIONS
NIOBIUM ALLOYS
NUMERICAL DATA
OXYGEN COMPOUNDS
REGRESSION ANALYSIS
SODIUM COMPOUNDS
SODIUM SULFATES
STATISTICS
SULFATES
SULFUR COMPOUNDS
TANTALUM ADDITIONS
TANTALUM ALLOYS
TITANIUM ADDITIONS
TITANIUM ALLOYS
TUNGSTEN ADDITIONS
TUNGSTEN ALLOYS
360105* -- Metals & Alloys-- Corrosion & Erosion
ALKALI METAL COMPOUNDS
ALLOYS
ALUMINIUM ADDITIONS
ALUMINIUM ALLOYS
CHEMICAL COMPOSITION
CHROMIUM ADDITIONS
CHROMIUM ALLOYS
COBALT ADDITIONS
COBALT ALLOYS
CORROSION RESISTANCE
DATA
EXPERIMENTAL DATA
INFORMATION
MATHEMATICS
MOLYBDENUM ADDITIONS
MOLYBDENUM ALLOYS
NICKEL ALLOYS
NICKEL BASE ALLOYS
NIOBIUM ADDITIONS
NIOBIUM ALLOYS
NUMERICAL DATA
OXYGEN COMPOUNDS
REGRESSION ANALYSIS
SODIUM COMPOUNDS
SODIUM SULFATES
STATISTICS
SULFATES
SULFUR COMPOUNDS
TANTALUM ADDITIONS
TANTALUM ALLOYS
TITANIUM ADDITIONS
TITANIUM ALLOYS
TUNGSTEN ADDITIONS
TUNGSTEN ALLOYS