Hierarchically L21/B2-nanostructured Cr-based alloy with exceptional creep strength

Vollhüter J, Göken M, Neumeier S (2026)

Publication Type: Journal article

Publication year: 2026

Journal

Materials Research Letters Taylor & Francis

DOI: 10.1080/21663831.2026.2615168

Abstract

A hierarchical precipitate structure enhances the strength of ferritic BCC superalloys. This concept is extended to Cr-based systems, aiming to realize superior mechanical strength in chromium alloys for challenging environments. The addition of Ti to the Cr-NiAl system leads to the formation of a nanostructured intermetallic compound consisting of B2 and L21 phases, which surround the dendritically solidified Crss. TEM and APT investigations reveal a network of B2 and L21 Heusler phases arranged in lamellar or rod-like morphologies. Compression creep tests show three orders of magnitude improvement in the Ti-containing α/α′/α″ Cr alloy over the α/α′ Cr alloy.

Authors with CRIS profile

Jan Vollhüter Lehrstuhl für Werkstoffwissenschaften (Allgemeine Werkstoffeigenschaften) Mathias Göken Lehrstuhl für Werkstoffwissenschaften (Allgemeine Werkstoffeigenschaften) Steffen Neumeier Lehrstuhl für Werkstoffwissenschaften (Allgemeine Werkstoffeigenschaften)

How to cite

APA:

Vollhüter, J., Göken, M., & Neumeier, S. (2026). Hierarchically L21/B2-nanostructured Cr-based alloy with exceptional creep strength. Materials Research Letters. https://doi.org/10.1080/21663831.2026.2615168

MLA:

Vollhüter, Jan, Mathias Göken, and Steffen Neumeier. "Hierarchically L21/B2-nanostructured Cr-based alloy with exceptional creep strength." Materials Research Letters (2026).

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