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Solidification Modeling of NiAl Single Crystal Castings

Published online by Cambridge University Press:  01 January 1992

K.O. Yu,
J.A. Oti and
W.S. Walston
K.O. Yu
Affiliation:
PCC Airfoils, Inc., 23555 Euclid Avenue, Cleveland, OH 44117
J.A. Oti
Affiliation:
PCC Airfoils, Inc., 23555 Euclid Avenue, Cleveland, OH 44117
W.S. Walston
Affiliation:
GE Aircraft Engines, 1 Neumann Way, MD 85, Cincinnati, OH 45215
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Abstract

Solidification conditions of a 0.64 cm × 2.5 cm × 15.2 cm slab and a 1.3 cm ɸ × 15.2 cm bar were simulated for two NiAl alloys. Simulation results were correlated with experimental inspection results to establish a relationship between dendrite arm spacing and local solidification time. The results were also used to construct a defects map for NiAl single crystal castings. Results have been compared to a similar model for single crystal nickel-base superalloys.

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References

REFERENCES

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