Please use this identifier to cite or link to this item: http://bura.brunel.ac.uk/handle/2438/27165
Title: Improving strength-ductility synergy of nano/ultrafine-structured Al/Brass composite by cross accumulative roll bonding process
Authors: Naseri, M
Reihanian, M
Moghaddam, AO
Gholami, D
Hosseini, S
Alvand, M
Borhani, E
Trofimov, E
Keywords: metallic multilayered composites;severe plastic deformation;microstructure characterization;deformation texture;mechanical properties
Issue Date: 9-Sep-2023
Publisher: Elsevier
Citation: Naseri, M. et al. (2023) 'Improving strength-ductility synergy of nano/ultrafine-structured Al/Brass composite by cross accumulative roll bonding process', Journal of Materials Research and Technology, 0 (in press, pre-proof), pp. 1 - 30. doi: 10.1016/j.jmrt.2023.09.046.
Abstract: Copyright © 2023 The Author(s). Increasing the strength of metallic multilayered composites fabricated through accumulative roll bonding (ARB) is typically accompanied by a sacrifice in ductility. In the current work, we propose a strategy to achieve microstructural refinement and outstanding strength-ductility synergy in Al/Brass composites. Here, the aluminum matrix exhibits a bimodal grain distribution, consisting of fine equiaxed grains with an average size of ∼100 nm and ultrafine-elongated grains, in which the brass fragments were distributed uniformly. These microstructural features, introduced through cross accumulative roll bonding (CARB), provide synergistic strengthening effects. The CARB processed composite exhibits a mean misorientation angle of 43.16° and a fraction of high angle grain boundaries of 87%, compared to values of 38.02° and 79% for ARB processed specimen. The CARB processed composite demonstrates a major texture characterized by prominent Rotated Brass {110}<556>, Rotated Goss {011}<011>, and Rotated Cube {001}<110> components. In contrast, the ARB processed specimen revealed strong Goss {011}<100>, Rotated Goss {011}<011>, Brass {011}<211>, and S {123}<634> components. The Copper {112}<111> and S {123}<634> components were nearly absent in the CARB processed composite, because both of them were unstable under the CARB regime. The CARB processed composite shows a tensile strength of 405 MPa and a remarkable elongation of 12.4% at ambient temperature, outperforming ARB processed specimen with a tensile strength of 335 MPa and elongation of 9.5%. These unique mechanical properties in the CARB processed composite are ascribed to the dislocation strengthening, bimodal grain size distribution, uniformity of the brass fragments, and quality of bonding at the interfaces.
URI: https://bura.brunel.ac.uk/handle/2438/27165
DOI: https://doi.org/10.1016/j.jmrt.2023.09.046
ISSN: 2238-7854
Other Identifiers: ORCID iDs: Mohsen Reihanian https://orcid.org/0000-0003-4618-5509; Ahmad Ostovari Moghaddam https://orcid.org/0000-0002-5316-3773; Seyedmehdi Hosseini https://orcid.org/0000-0001-6975-2794
Appears in Collections:Brunel Centre for Advanced Solidification Technology (BCAST)

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