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

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 (2018)

Publication Language: English

Publication Status: Published

Publication Type: Journal article

Publication year: 2018

Journal

Metallurgical and Materials Transactions A-Physical Metallurgy and Materials Science ASM International

Publisher: SPRINGER

Book Volume: 49A

Pages Range: 4134-4145

Journal Issue: 9

DOI: 10.1007/s11661-018-4759-0

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.

Authors with CRIS profile

Matthias Markl Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle) (WTM) Alexander Müller Technische Fakultät Nils Ritter Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle) (WTM) Matthias Hofmeister Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle) (WTM) Ralf Rettig Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle) (WTM) Robert Singer Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle) (WTM) Carolin Körner Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle) (WTM)

Related research project(s)

Activity Multi-criteria optimization Jan. 1, 2000 - Jan. 1, 2003

Involved external institutions

Ruhr-Universität Bochum (RUB) DE Germany (DE)

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://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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