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

Journal article


Publication Details

Author(s): 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
Journal: Metallurgical and Materials Transactions A-Physical Metallurgy and Materials Science
Publisher: SPRINGER
Publication year: 2018
Volume: 49A
Journal issue: 9
Pages range: 4134-4145
ISSN: 1073-5623
Language: English


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 Authors / FAU Editors

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
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)


External institutions
Ruhr-Universität Bochum (RUB)


How to cite

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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Last updated on 2019-04-01 at 18:10