Oxide-stabilized microstructure of severe plastically deformed CuCo alloys

Stückler M, Zálešák J, Müller T, Wurster S, Weissitsch L, Meier M, Felfer P, Gammer C, Pippan R, Bachmaier A (2022)

Publication Type: Journal article

Publication year: 2022

Journal

Journal of Alloys and Compounds Elsevier

Book Volume: 901

Article Number: 163616

DOI: 10.1016/j.jallcom.2022.163616

Abstract

Nanocrystalline materials are well known for their beneficial mechanical and physical properties. However, it is of utmost importance to stabilize the microstructure at elevated temperatures to broaden the window of application e.g. by pinning grain boundaries through impurities or oxides. CuCo alloys, severe plastically deformed using high-pressure torsion, were used to investigate the evolution of oxides upon annealing. These investigations were performed using electron microscopy, synchrotron high-energy X-ray scattering and atom probe tomography. Monitoring the evolution of oxides by in-situ small angle scattering investigations indicates the growth of primary oxides as well as the formation of another species of oxide at elevated temperatures. Slightly different coarsening can be observed in heat-treated samples, which can be traced back to the influence of different oxide amounts. The initially supersaturated CuCo matrix changes by the decomposition process as well as Co- and Cu-based oxides formation and growth. It has been found that the major number of oxides which are present after annealing, can already be found in the starting materials.

Authors with CRIS profile

Martin Meier Lehrstuhl für Werkstoffwissenschaften (Allgemeine Werkstoffeigenschaften) Peter Felfer Professur für Atom Probe Tomography

Involved external institutions

Deutsches Elektronen-Synchrotron DESY DE Germany (DE) Österreichische Akademie der Wissenschaften AT Austria (AT)

How to cite

APA:

Stückler, M., Zálešák, J., Müller, T., Wurster, S., Weissitsch, L., Meier, M.,... Bachmaier, A. (2022). Oxide-stabilized microstructure of severe plastically deformed CuCo alloys. Journal of Alloys and Compounds, 901. https://dx.doi.org/10.1016/j.jallcom.2022.163616

MLA:

Stückler, Martin, et al. "Oxide-stabilized microstructure of severe plastically deformed CuCo alloys." Journal of Alloys and Compounds 901 (2022).

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