MATERIALS REVIEW FOR IMPROVED AUTOMOTIVE GAS TURBINE ENGINE

The potential role of superalloys, refractory alloys, and ceramics in the hottest sections of engines operating with turbine inlet temperatures as high as 1370 C is examined. The convential superalloys, directionally solidified eutectics, oxide dispersion strenghened alloys, and tungsten fiber reinforced superalloys are reviewed and compared on the basis of maximum turbine blade temperature capability. Improved high temperature protective coatings and special fabrication techniques for these advanced alloys are discussed. Chromium, columbium, molybdenum, tantalum, and tungsten alloys are also reviewed. Molbdenum alloys are found to be the most suitable for mass produced turbine wheels. Various forms and fabrication processes for silicon nitride, silicon carbide, and SIALON's are investigated for use in highstress and medium stress high temperature environments.

• Supplemental Notes:
  • Subm-Sponsored by NASA.
• Corporate Authors:

  Chrysler Corporation

  12000 Lynn Townsend Drive
  Highland Park, MI  United States  48231
• Authors:
  • Belleau, C
  • Ehlers, W L
  • Hagen, F A
• Publication Date: 1978-4

Media Info

• Pagination: 101 p.

Subject/Index Terms

• TRT Terms: Alloys; Blades (Machinery); Ceramic materials; Economic analysis; Fabrication; Gas turbines; High temperature; Industrial engineering; Production; Protective coatings; Turbine engines; Turbines; Vehicle power plants; Wheels
• Old TRIS Terms: Automobile engines; High temperature environments; Refractory metal alloys; Turbine wheels
• Subject Areas: Economics; Geotechnology; Highways; Materials; Vehicles and Equipment; I94: Vehicle Corrosion;

Filing Info

• Accession Number: 00313760
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: NASA-CR-159673 Final Rpt., DOE/NASA/2749-79/4-V-4
• Contract Numbers: EY-76-C-02-2749.A011
• Files: TRIS
• Created Date: Jun 26 1980 12:00AM