NDLI: Oxide-dispersion-strengthened turbine blades. volume 2

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Oxide-dispersion-strengthened turbine blades. volume 2

Content Provider	NASA Technical Reports Server (NTRS)
Author	Humbert, D. R. Mays, J. C. Millan Jr., P. P.
Copyright Year	1987
Description	The overall objective of Project 4 was to develop and test a high-temperature, uncooled gas turbine blade using MA6000 alloy. Production scale up of the MA6000 alloy was achieved with a fair degree of tolerance to non-optimum processing. The blade manufacturing process was also optimized. The mechanical, environmental, and physical property evaluations of MA6000 were conducted. The ultimate tensile strength, to about 704 C (1300 F), is higher than DS MAR-M 247 but with a corresponding lower tensile elongation. Also, above 982 C (1800 F) MA6000 tensile strength does not decrease as rapidly as MAR-M 247 because the ODS mechanism still remains active. Based on oxidation resistance and diffusional stability considerations, NiCrAlY coatings are recommended. CoCrAlY coating should be applied on top of a thin NiCrAlY coating if hot corrosion is expected. Vibration, whirlpit, and high-rotor-rig tests were conducted to ensure successful completion of the engine test of the MA6000 TFE731 high pressure turbine blades. Test results were acceptable. In production quantities, the cost of the Project 4 MA6000 blade is estimated to be twice that of a cast DS MAR-M 247 blade.
File Size	23487210
Page Count	49
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19890009116
Archival Resource Key	ark:/13960/t24b7zs8f
Language	English
Publisher Date	1987-01-01
Access Restriction	Open
Subject Keyword	Aircraft Propulsion And Power Oxidation Resistance Gas Turbines Turbine Blades Alloys Chromium Feasibility Analysis Nickel Engine Tests High Temperature Hot Corrosion Protective Coatings Oxide Dispersion Strengthening Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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