Influence of Ruthenium on topologically closed packed phase precipitation in single-crystal Ni-based superalloys: numerical experiments and validation

Beitrag bei einer Tagung


Details zur Publikation

Autor(en): Rettig R, Singer R
Herausgeber: E. S. Huron, R. C. Reed, M. C. Hardy, M. J. Mills, R. E. Montero, P. Dolabella Portella, J. Telesman
Verlag: Minerals, Metals and Materials Society
Jahr der Veröffentlichung: 2012
Tagungsband: Superalloys 2012: Proceedings of the 12th Intenational Symposium of Superalloys
Seitenbereich: 205-214
ISBN: 978-0-470-94320-5
Sprache: Englisch


Abstract


The suppression of topologically close-packed phases (TCP) in nickel-based single-crystal superalloys by the addition of ruthenium is modeled with a fully multicomponent mesoscale precipitation model based on the numerical Kampmann-Wagner-method using thermodynamic CALPHAD-calculations. For the application of the model in ruthenium-containing superalloys, mobility assessments of the binary systems nickel-ruthenium (Ni-Ru) and nickel-rhenium (Ni-Re) were performed to create a new mobility database. It is postulated that the dominating effect of ruthenium regarding more sluggish TCP-phase precipitation is a change of interface energy reducing the number of precipitates nucleating. The precipitation sequences occurring during TCP-phase precipitation can be explained using CALPHAD thermodynamics.



FAU-Autoren / FAU-Herausgeber

Rettig, Ralf Dr.-Ing.
Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle)
Singer, Robert Prof. Dr.-Ing.
Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle)


Zitierweisen

APA:
Rettig, R., & Singer, R. (2012). Influence of Ruthenium on topologically closed packed phase precipitation in single-crystal Ni-based superalloys: numerical experiments and validation. In E. S. Huron, R. C. Reed, M. C. Hardy, M. J. Mills, R. E. Montero, P. Dolabella Portella, J. Telesman (Eds.), Superalloys 2012: Proceedings of the 12th Intenational Symposium of Superalloys (pp. 205-214). Seven Springs, US: Minerals, Metals and Materials Society.

MLA:
Rettig, Ralf, and Robert Singer. "Influence of Ruthenium on topologically closed packed phase precipitation in single-crystal Ni-based superalloys: numerical experiments and validation." Proceedings of the 112th International Symposium on Superalloys, SUPERALLOYS 2012, Seven Springs Ed. E. S. Huron, R. C. Reed, M. C. Hardy, M. J. Mills, R. E. Montero, P. Dolabella Portella, J. Telesman, Minerals, Metals and Materials Society, 2012. 205-214.

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