Adapting Conductivity and Mechanical Properties through Layer Thickness Variation in Copper Niobium Laminated Metallic Composites

Kuglstatter M, Nitschky M, Hartmann A, Kümmel F, Fecher J, Felfer P, Höppel HW, Göken M (2024)

Publication Language: English

Publication Type: Journal article

Publication year: 2024

Journal

Advanced Engineering Materials Wiley

Article Number: 2400266

DOI: 10.1002/adem.202400266

Abstract

Cu/Nb laminated metallic composites (LMCs) exhibit extraordinary mechanical strength while electrical conductivity is maintained at a high level. In this research, Cu-based LMCs with varying volume fraction of niobium are produced via accumulative roll bonding (ARB) and additionally cold-rolled and heat-treated to identify the role of these heterogeneous phase boundaries on the overall sheet properties. Deformation structures in these layered materials are studied through scanning transmission electron microscopy investigations. The existence of an interface-affected zone at the phase boundaries and mechanical intermixing is attributed to decreasing electrical and increasing mechanical properties, especially in very thin layered LMCs. Atom probe tomography measurements show that mechanical alloying occurs due to severe plastic deformation during ARB processing of the laminates. An additional subsequent heat treatment leads to chemical demixing at the interfaces of the phase boundaries.

Authors with CRIS profile

Moritz Kuglstatter Lehrstuhl für Werkstoffwissenschaften (Allgemeine Werkstoffeigenschaften) Anna Hartmann Lehrstuhl für Werkstoffwissenschaften (Allgemeine Werkstoffeigenschaften) Peter Felfer Professur für Atom Probe Tomography Heinz Werner Höppel Lehrstuhl für Werkstoffwissenschaften (Allgemeine Werkstoffeigenschaften) Mathias Göken Lehrstuhl für Werkstoffwissenschaften (Allgemeine Werkstoffeigenschaften)

Involved external institutions

Framatome GmbH DE Germany (DE) Heraeus Precious Metals GmbH & Co. KG DE Germany (DE)

How to cite

APA:

Kuglstatter, M., Nitschky, M., Hartmann, A., Kümmel, F., Fecher, J., Felfer, P.,... Göken, M. (2024). Adapting Conductivity and Mechanical Properties through Layer Thickness Variation in Copper Niobium Laminated Metallic Composites. Advanced Engineering Materials. https://doi.org/10.1002/adem.202400266

MLA:

Kuglstatter, Moritz, et al. "Adapting Conductivity and Mechanical Properties through Layer Thickness Variation in Copper Niobium Laminated Metallic Composites." Advanced Engineering Materials (2024).

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