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Determination of the elastic moduli of a directionally solidified nickel-based TaC eutectic

Journal Article · · Metall. Trans., A; (United States)
OSTI ID:5600287
Measurements of ultrasonic wave velocities in a polycrystalline directionally solidified nickel based eutectic alloy are used to evaluate the three independent single crystal elastic moduli at temperatures between 298 to 925/sup 0/K. The C/sub 11/ and C/sub 44/ moduli are obtained directly from high frequency wave propagation along the D.S. axis, corresponding to <100>. Evaluation of C/sub 12/ requires measurements at lower frequencies to obtain (C/sub 11/-E/sub <100>/). The elastic anisotropy and temperature dependence of the elastic moduli are almost identical to those reported for pure Ni, indicating that neither TaC fiber reinforcement nor ..gamma..' precipitate have strong effects on elastic properties of Ni based turbine blade alloys.
Research Organization:
Argonne National Lab., IL
OSTI ID:
5600287
Journal Information:
Metall. Trans., A; (United States), Journal Name: Metall. Trans., A; (United States) Vol. 11:1; ISSN MTTAB
Country of Publication:
United States
Language:
English