BCC-superalloys: Perspectives and challenges
Knowles AJ, Zenk C (2025)
Publication Type: Journal article
Publication year: 2025
Journal
Book Volume: 267
Article Number: 116761
DOI: 10.1016/j.scriptamat.2025.116761
Abstract
Body-centred-cubic BCC-superalloys are a nascent materials class following a microstructure template of a disordered BCC matrix (e.g. refractory metal, Fe, Ti) reinforced by coherent precipitates that adopt a BCC-derived ordered superlattice structure, to enable enhanced high temperature performance. This is by analogy to the highly successful Ni superalloys whose properties are underpinned by their microstructure template of γ/γ′ FCC-Ni solid solution and ordered Ni3Al. BCC-superalloys represent a powerful Beyond Nickel Based Superalloy design approach for high temperature applications from aerospace engines and rockets to fusion energy. Various BCC-superalloy base systems offer increased melting points, oxidation/corrosion/irradiation resistance, reduced density and/or cost advantages. However, challenges exist in phase stability, low temperature ductility, oxidation/corrosion resistance and the availability of predictive tools. This BCC-superalloys Viewpoint Set addresses key challenges, theories and opportunities across the following overarching topics: Modelling, Phase transformations, Lattice misfit, Mechanical behaviour, Deformation mechanisms, Oxidation/corrosion, and Additive manufacturing.
Authors with CRIS profile
Christopher Zenk
Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle) (WTM)
Involved external institutions
United Kingdom (GB)How to cite
APA:
Knowles, A.J., & Zenk, C. (2025). BCC-superalloys: Perspectives and challenges. Scripta Materialia, 267. https://doi.org/10.1016/j.scriptamat.2025.116761
MLA:
Knowles, Alexander J., and Christopher Zenk. "BCC-superalloys: Perspectives and challenges." Scripta Materialia 267 (2025).
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