Development and Design of Directionally Solidified Eutectic Airfoils for Advanced Gas Turbine Engines PUBLIC ACCESS

[+] Author Affiliations
M. Gell, K. M. Thomas

Pratt & Whitney Aircraft, East Hartford, CT

Paper No. 76-GT-32, pp. V01AT01A032; 9 pages
  • ASME 1976 International Gas Turbine and Fluids Engineering Conference
  • Volume 1A: General
  • New Orleans, Louisiana, USA, March 21–25, 1976
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7974-0
  • Copyright © 1976 by ASME


Directionally solidified eutectic airfoils for advanced gas turbine engine applications are undergoing intensive development in a number of laboratories in the United States and Europe. These materials offer the potential of a 40 percent or greater increase in creep strength for high work engines or a 50 K or more increase in blade metal temperature for growth versions of current engines. The development status of these alloys will be described with emphasis on casting techniques, mechanical properties, and coatings for the gamma/gamma prime + delta (γ / γ′ + δ) D.S. eutectic. The implications of the elastic anisotropy and low off-axis properties of the D.S. eutectics to turbine blade design and analysis will be discussed.

Copyright © 1976 by ASME
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