M.C. Schneider, J. Gu, and C. Beckermann

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This project deals with the simulation of flow, heat transfer, micro-/macro- segregation and grain defects in single-crystal directional solidification of Ni-based superalloy turbine blades, where the model includes a thermodynamic data-base and first-principle phase equilibrium calculations. The thermodynamic model was obtained from W.J.Boettinger at NIST.

The superalloy project is sponsored by the U.S. Advanced Research Projects Agency (ARPA) through the Investment Casting Cooperative Arrangement (ICCA). The ICCA is a consortium of five companies: General Electric Aircraft Engines, Pratt and Whitney, Howmet, PCC, and UES. In addition to these five member companies, a number of research institutes are participating members of the program. The present ICCA project is entitled "Materials Science-Based Microstructure Modeling of Multicomponent Superalloys."

Our present task is led by Tony Giamei of the United Technologies Research Center.