Thermoelastic properties and \(\gamma\)'-solvus temperatures of single-crystal Ni-base superalloys

The present work shows that thermal expansion experiments can be used to measure the \(\gamma\)'-solvus temperatures of four Ni-base single-crystal superalloys (SX), one with Re and three Re-free variants. In the case of CMSX-4, experimental results are in good agreement with numerical thermodynamic results obtained using ThermoCalc. For three experimental Re-free alloys, the experimental and calculated results are close. Transmission electron microscopy shows that the chemical compositions of the \(\gamma\)- and the \(\gamma\)'-phases can be reasonably well predicted. We also use resonant ultrasound spectroscopy (RUS) to show how elastic coefficients depend on chemical composition and temperature. The results are discussed in the light of previous results reported in the literature. Areas in need of further work are highlighted.

Metadaten
Author:	Oliver Martin Horst ORCiD GND, Dennis Schmitz ORCiD, Jürgen Schreuer ORCiD GND, Paul Git ORCiD, Hongcai Wang ORCiD GND, Carolin Körner ORCiD GND, Gunther Eggeler ORCiD GND
URN:	urn:nbn:de:hbz:294-96651
DOI:	https://doi.org/10.1007/s10853-020-05628-w
Parent Title (English):	Journal of materials science
Publisher:	Springer Science + Business Media B.V.
Place of publication:	Dordrecht
Document Type:	Article
Language:	English
Date of Publication (online):	2023/02/20
Date of first Publication:	2021/01/21
Publishing Institution:	Ruhr-Universität Bochum, Universitätsbibliothek
Volume:	56
First Page:	7637
Last Page:	7658
Note:	Dieser Beitrag ist auf Grund des DEAL-Springer-Vertrages frei zugänglich.
Institutes/Facilities:	Institut für Werkstoffe
Dewey Decimal Classification:	Technik, Medizin, angewandte Wissenschaften / Ingenieurwissenschaften, Maschinenbau
open_access (DINI-Set):	open_access
faculties:	Fakultät für Maschinenbau
Licence (English):	Creative Commons - CC BY 4.0 - Attribution 4.0 International

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