Accession Number:

ADA030074

Title:

Metal Matrix Composites for High Temperature Turbine Blades.

Descriptive Note:

Final rept.,

Corporate Author:

TRW INC CLEVELAND OHIO

Personal Author(s):

Report Date:

1976-04-01

Pagination or Media Count:

42.0

Abstract:

The continued development and evaluation of the refractory wire reinforced FeCrAlY composites designed for application in advanced gas turbine engines is described. These investigations included determination of 1000-hour creep and stress rupture properties in the temperature range 1037 -1148C, generation of fibermatrix reaction rate data, tensile tests on angle plied composites, burner rig tests and blade-oriented fabrication studies. Long term stress rupture and creep properties were in agreement with predictions based on earlier shorter time tests. Density compensated strengths of about 2.51 over current D.S. eutectics were demonstrated and relatively low creep rates observed. Parabolic growth rates for fibermatrix reaction zones were identified and reaction rate constants determined. Tensile strengths at 648 and 760 C on angle plied composites indicated adequate strengths for a or - 15 deg construction in terms of turbine blade root stresses. Preliminary burner rig tests indicated no significant problems for WFeCrAlY composites exposed to this type of environment. Some blade oriented fabrication studies were also performed. Author

Subject Categories:

  • Laminates and Composite Materials
  • Jet and Gas Turbine Engines

Distribution Statement:

APPROVED FOR PUBLIC RELEASE