Mechanical properties of copper/bronze laminates: Role of interfaces

Ma X, Huang C, Moering J, Ruppert M, Höppel HW, Göken M, Narayan J, Zhu Y (2016)

Publication Status: Published

Publication Type: Journal article

Publication year: 2016

Journal

Acta Materialia Elsevier

Publisher: PERGAMON-ELSEVIER SCIENCE LTD

Book Volume: 116

Pages Range: 43-52

DOI: 10.1016/j.actamat.2016.06.023

Abstract

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.

Authors with CRIS profile

Mathis Ruppert Lehrstuhl für Werkstoffwissenschaften (Allgemeine Werkstoffeigenschaften) Heinz Werner Höppel Lehrstuhl für Werkstoffwissenschaften (Allgemeine Werkstoffeigenschaften) Mathias Göken Lehrstuhl für Werkstoffwissenschaften (Allgemeine Werkstoffeigenschaften)

Additional Organisation(s)

Exzellenz-Cluster Engineering of Advanced Materials Lehrstuhl für Werkstoffwissenschaften (Allgemeine Werkstoffeigenschaften)

Involved external institutions

North Carolina State University US United States (USA) (US) Sichuan University (SCU) / 四川大学 CN China (CN)

How to cite

APA:

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. https://dx.doi.org/10.1016/j.actamat.2016.06.023

MLA:

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

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