FEM SIMULATION OF STRAIN DISTRIBUTION THROUGH THICKNESS OF MULTILAYERED METAL COMPOSITE PROCESSED BY ASYMMETRIC ACCUMULATIVE ROLL BONDING

1 LOKOTUNINA Natalya
Co-authors:
1 PESIN Alexander 1 PUSTOVOYTOV Denis 1 GRACHEV Dmitry
Institution:
1 Nosov Magnitogorsk State Technical University, Magnitogorsk, Russian Federation, 1nml76@mail.ru
Conference:
28th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 22nd - 24th 2019
Proceedings:
Proceedings 28th International Conference on Metallurgy and Materials
Pages:
271-276
ISBN:
978-80-87294-92-5
ISSN:
2694-9296
Published:
4th November 2019
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
51 views / 18 downloads
Abstract

Accumulative roll bonding (ARB) is one of the severe plastic deformation methods of producing ultrafine grained laminated metal composites (LMCs). In order to obtain one‐body solid material, the rolling in ARB is not only a deformation process but also a roll-bonding process. ARB technique can be applied to generate LMCs consisting of layers of the same one material or several dissimilar materials. This paper is focused on LMCs consisting of dissimilar metal system of aluminum alloys 1050/6061 and 1050/6061/1050. One difficulty of roll bonding dissimilar materials is obtaining of elevated strain at the interface of the composite in order to provide the ultrafine grain structure and superior bonding strength between the stacked layers. Compared to conventional ARB the asymmetric accumulative roll bonding is more appropriate for the production of dissimilar metal composites. This paper presents the results of the finite element simulation and comparison of interface strain behavior during conventional and asymmetric ARB of 1050/6061 and 1050/6061/1050 Al composites. Influence of rolls speed ratio and contact friction on strain distribution through composite thickness, especially on interface between the 1050 and 6061 layers, during asymmetric ARB were analyzed by FEM in details. The FEM results of investigation can be useful for the development of the improved ARB process of Al composites with UFG structure and high bond strength.

Keywords: Metal composite, asymmetric accumulative roll bonding, finite element method, strain, interface
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