Recovery of superlattice stacking faults at high temperatures

Bezold A, Amon L, Karpstein N, Spiecker E, Göken M, Neumeier S (2023)

Publication Type: Journal article

Publication year: 2023

Journal

Scripta Materialia Elsevier

Book Volume: 222

Article Number: 115005

DOI: 10.1016/j.scriptamat.2022.115005

Abstract

Stacking fault shearing is commonly observed in Co-base and CoNi-base superalloys in the intermediate temperature regime between 850 °C to 1000 °C in contrast to Ni-base superalloys. In this work, we report on the significance of recovery processes after aging and creep experiments on predeformed specimens with extreme stacking fault densities. Above 950 °C, superlattice stacking faults start to recover rapidly, whereby intrinsic ones recover more quickly than extrinsic ones. Our results also reveal that the significance of stacking fault shearing in the high temperature creep regime could be higher than that indicated by traditional postmortem investigations due to recovery processes.

Authors with CRIS profile

Andreas Bezold Lehrstuhl für Werkstoffwissenschaften (Allgemeine Werkstoffeigenschaften) Nicolas Karpstein Lehrstuhl für Werkstoffwissenschaften (Mikro- und Nanostrukturforschung) Erdmann Spiecker Lehrstuhl für Werkstoffwissenschaften (Mikro- und Nanostrukturforschung) Mathias Göken Lehrstuhl für Werkstoffwissenschaften (Allgemeine Werkstoffeigenschaften) Steffen Neumeier Lehrstuhl für Werkstoffwissenschaften (Allgemeine Werkstoffeigenschaften)

How to cite

APA:

Bezold, A., Amon, L., Karpstein, N., Spiecker, E., Göken, M., & Neumeier, S. (2023). Recovery of superlattice stacking faults at high temperatures. Scripta Materialia, 222. https://doi.org/10.1016/j.scriptamat.2022.115005

MLA:

Bezold, Andreas, et al. "Recovery of superlattice stacking faults at high temperatures." Scripta Materialia 222 (2023).

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