Thermoelastic properties and γ’-solvus temperatures of single-crystal Ni-base superalloys

Horst OM, Schmitz D, Schreuer J, Git P, Wang H, Körner C, Eggeler G (2021)

Publication Language: English

Publication Type: Journal article

Publication year: 2021

Journal

Journal of Materials Science Springer Verlag (Germany)

DOI: 10.1007/s10853-020-05628-w

Abstract

Abstract: The present work shows that thermal expansion experiments can be used to measure the γʼ-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 γ- and the γʼ-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. Graphical abstract: [Figure not available: see fulltext.]

Authors with CRIS profile

Paul Git Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle) Carolin Körner Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle)

Involved external institutions

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

How to cite

APA:

Horst, O.M., Schmitz, D., Schreuer, J., Git, P., Wang, H., Körner, C., & Eggeler, G. (2021). Thermoelastic properties and γ’-solvus temperatures of single-crystal Ni-base superalloys. Journal of Materials Science. https://dx.doi.org/10.1007/s10853-020-05628-w

MLA:

Horst, O. M., et al. "Thermoelastic properties and γ’-solvus temperatures of single-crystal Ni-base superalloys." Journal of Materials Science (2021).

BibTeX: Download