Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9796311 | Materials Science and Engineering: A | 2005 | 6 Pages |
Abstract
The solidification and cooling of the nickel-base alloy CMSX-4 during casting was simulated using a one-dimensional model for diffusion-controlled phase transformations. A temperature interval from the liquidus temperature to 800âK is covered, including solid state transformations. This paper discusses several results: fraction solid compared to results from Scheil and equilibrium calculations, microsegregation profiles for Al, Co, Cr, Re, Ta, Ti and W compared to experimental values, and the formation of finely dispersed γâ²-phase in the solid state. The relatively simple one-dimensional diffusion simulation is shown to be a valuable tool to investigate phase formation and microsegregation during solidification and cooling. In the case of CMSX-4 it represents a significant improvement over the commonly used Scheil calculations for the prediction of the fraction solid.
Related Topics
Physical Sciences and Engineering
Materials Science
Materials Science (General)
Authors
C. Walter, B. Hallstedt, N. Warnken,