Numerical modelling of grain refinement around highly reactive interfaces in processing of nanocrystallised multilayered metallic materials by duplex technique

Bajda, Szymon and Svyetlichnyy, Dmytro and Retraint, Delphine and Krzyzanowski, Michal (2018) Numerical modelling of grain refinement around highly reactive interfaces in processing of nanocrystallised multilayered metallic materials by duplex technique. International Journal of Advanced Manufacturing Technology, 96 (5-8). pp. 2893-2905. ISSN 0268-3768

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Abstract

Microstructure evolution around highly reactive interfaces in processing of nanocrystallised multilayered metallic materials have been investigated and discussed in the present work. Conditions leading to grain refinement during co-rolling stage of the duplex processing technique are analysed using the multi-level finite element based numerical model combined with three-dimensional frontal cellular automata. The model was capable to simulate development of grain boundaries and changes of the boundary disorientation angle within the metal structure taking into account crystal plasticity formulation. Appearance of a large number of structural elements, identified as dislocation cells, sub-grains and new grains, has been identified within the metal structure as a result of metal flow disturbance and consequently inhomogeneous deformation around oxide islets at the interfaces during the co-rolling stage. These areas corresponded to the locations of shear bands observed experimentally using SEM-EBSD analysis. The obtained results illustrate a significant potential of the proposed modelling approach for quantitative analysis and optimisation of the highly refined non-homogeneous microstructures formed around the oxidised interfaces during processing of such laminated materials.

Item Type: Article
Uncontrolled Keywords: Severe plastic deformation; Duplex techniques; Surface mechanical attrition treatment; Thermomechanical processing; Microstructure evolution; Multi-level numerical modelling - Finite element method; Frontal cellular automata.
Subjects: F200 Materials Science
H300 Mechanical Engineering
J500 Materials Technology not otherwise specified
Divisions: Faculty of Computing, Engineering and the Built Environment > School of Engineering and the Built Environment
Depositing User: Michal Krzyzanowski
Date Deposited: 11 Jul 2018 15:16
Last Modified: 11 Jul 2018 15:16
URI: http://www.open-access.bcu.ac.uk/id/eprint/6087

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