Simulation Segregaton in CMSX-4 Superalloy: Experiments and Simulation Predictions
Journal Title: Jurnalul Stiintific TURBO - Year 2017, Vol 4, Issue 1
Abstract
The segregation degree of alloying elements during solidification in as-cast CMSX-4 singlecrystal superalloy was investigated. The elemental partition coefficients calculated using the results of experimental measurements of local compositions and predicted by thermodynamic calculation in multicomponent alloys have shown the tendency of the elements to segregate either into the dendrites (W, Re) or in the interdendritic regions (Al, Ti, and Ta). Among the alloying elements Re has the strongest tendency to segregate. It was found a good agreement between the experimental and simulation prediction results, as well as compared with an analytical model. By thermodynamic calculation it was established the influence of superalloy chemistry on the elemental segregation during solidification.
Authors and Affiliations
Gheorghe MATACHE, Alexandru PARASCHIV, Cristian PUSCASU, Mihaela Raluca CONDRUZ
Keywords
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