Mechanical behavior of the directionally solidified gamma/gamma prime - delta eutectic alloyThe eutectic alloy Ni-20.0%Cb-2.5%Al-6.0%Cr was tested in short-term creep and long-term exposure to service conditions to assess its suitability for high temperature turbine blade applications. Long-time exposure showed the lamellar microstructure of the alloy to be exceptionally stable. Other properties tested were notch sensitivity, isothermal and thermomechanical fatigue strength, shear strength, and transverse ductility. It was shown that this alloy is superior to the best currently available directionally solidified superalloys over the temperature/stress conditions encountered in turbine airfoils.
Document ID
19760028203
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Barkalow, R. H. (United Technologies Corp. East Hartford, CT, United States)
Jackson, J. J. (United Technologies Corp. East Hartford, CT, United States)
Gell, M. (United Technologies Corp. East Hartford, CT, United States)
Leverant, G. R. (United Technologies Corp. Pratt and Whitney Aircraft Div., East Hartford, Conn., United States)