Development of Single-Crystal Ni-Base Superalloys Based on Multi-criteria Numerical Optimization and Efficient Use of Refractory Elements

Beitrag in einer Fachzeitschrift


Details zur Publikation

Autor(en): Markl M, Müller A, Ritter N, Hofmeister M, Naujoks D, Schaar H, Abrahams K, Frenzel J, Subramanyam APA, Ludwig A, Pfetzing-Micklich J, Hammerschmidt T, Drautz R, Steinbach I, Rettig R, Singer R, Körner C
Zeitschrift: Metallurgical and Materials Transactions A-Physical Metallurgy and Materials Science
Verlag: SPRINGER
Jahr der Veröffentlichung: 2018
Band: 49A
Heftnummer: 9
Seitenbereich: 4134-4145
ISSN: 1073-5623
Sprache: Englisch


Abstract

The development of new Ni-base superalloys with a complex composition consisting of eight or more alloying elements is a challenging task. The experimental state-of-the-art development cycle is based on the adaption of already existing compositions. Although new alloy compositions with potentially improved material properties are expected to be similar to already known superalloys, this procedure impedes efficiently finding these compositions in the large multi-dimensional design-space of all alloying elements. Modern alloy development combines numerical optimization methods with experimental validation to guide the development towards promising compositions. In this work, an improved numerical multi-criteria optimization tool using CALPHAD calculations and semi-empirical models for alloy development is presented. The model improvements to its predecessor are described and the successful application for the development of rhenium-free single-crystal Ni-base superalloys ERBO/13 and ERBO/15 is revisited. The optimization tool is described and the designed alloys are discussed regarding phase stability. Finally, a possible phase stability model extending the optimization tool and improving the alloy composition predictions is presented.


FAU-Autoren / FAU-Herausgeber

Hofmeister, Matthias
Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle)
Körner, Carolin Prof. Dr.-Ing.
Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle)
Markl, Matthias Dr.-Ing.
Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle)
Müller, Alexander
Technische Fakultät
Rettig, Ralf Dr.-Ing.
Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle)
Ritter, Nils
Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle)
Singer, Robert Prof. Dr.-Ing.
Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle)


Autor(en) der externen Einrichtung(en)
Ruhr-Universität Bochum (RUB)


Zitierweisen

APA:
Markl, M., Müller, A., Ritter, N., Hofmeister, M., Naujoks, D., Schaar, H.,... Körner, C. (2018). Development of Single-Crystal Ni-Base Superalloys Based on Multi-criteria Numerical Optimization and Efficient Use of Refractory Elements. Metallurgical and Materials Transactions A-Physical Metallurgy and Materials Science, 49A(9), 4134-4145. https://dx.doi.org/10.1007/s11661-018-4759-0

MLA:
Markl, Matthias, et al. "Development of Single-Crystal Ni-Base Superalloys Based on Multi-criteria Numerical Optimization and Efficient Use of Refractory Elements." Metallurgical and Materials Transactions A-Physical Metallurgy and Materials Science 49A.9 (2018): 4134-4145.

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Zuletzt aktualisiert 2018-06-09 um 08:38