Mechanical properties of copper/bronze laminates: Role of interfaces

Journal article

Publication Details

Author(s): Ma X, Huang C, Moering J, Ruppert M, Höppel HW, Göken M, Narayan J, Zhu Y
Journal: Acta Materialia
Publication year: 2016
Volume: 116
Pages range: 43-52
ISSN: 1359-6454


Interfaces play a crucial role in mechanical behaviors of both laminated and gradient structured materials. In this work, copper/bronze laminates with varying interface spacing were fabricated by accumulative roll bonding and subsequent annealing to systematically study the interface effect on mechanical properties. Heterogeneities exist in chemical composition, grain size, hardness and texture across the interfaces. Simultaneous improvement of strength and ductility with decreasing interface spacing is found in tensile tests. Extra geometrically necessary dislocations (GNDs) are found to accumulate in the vicinity of interfaces, which is due to mechanical incompatibility across the interfaces. Importantly, an interface-affected zone spanning a few micrometers was found, which is not affected by interface spacing. These observations suggest the existence of an optimum spacing, which may produce the highest hardening capacity and ductility without sacrificing strength. (C) 2016 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

FAU Authors / FAU Editors

Göken, Mathias Prof. Dr.
Lehrstuhl für Werkstoffwissenschaften (Allgemeine Werkstoffeigenschaften)
Höppel, Heinz Werner PD Dr.-Ing.
Ruppert, Mathis
Lehrstuhl für Werkstoffwissenschaften (Allgemeine Werkstoffeigenschaften)
Lehrstuhl für Werkstoffwissenschaften (Allgemeine Werkstoffeigenschaften)

Additional Organisation
Exzellenz-Cluster Engineering of Advanced Materials

External institutions with authors

North Carolina State University
Sichuan University (SCU) / 四川大学

Research Fields

E Lightweight Materials
Exzellenz-Cluster Engineering of Advanced Materials
A2 Nanoanalysis and Microscopy
Exzellenz-Cluster Engineering of Advanced Materials

How to cite

Ma, X., Huang, C., Moering, J., Ruppert, M., Höppel, H.W., Göken, M.,... Zhu, Y. (2016). Mechanical properties of copper/bronze laminates: Role of interfaces. Acta Materialia, 116, 43-52.

Ma, Xiaolong, et al. "Mechanical properties of copper/bronze laminates: Role of interfaces." Acta Materialia 116 (2016): 43-52.


Last updated on 2019-12-02 at 05:08