Modeling of the inhomogeneity of grain refinement during combined metal forming process by finite element and cellular automata methods

Majta, Janusz; Madej, Łukasz; Svyetlichnyy, Dmytro; Perzyński, K.; Kwiecień, Marcin; Muszka, Krzysztof

doi:10.1016/j.msea.2016.06.052

Cited by 25 publications

(7 citation statements)

References 17 publications

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“…Obtained results from the DMR simulation proved that the simple hardening model can be used to evaluate grain refinement in a highly complicated process instead of using a more advanced crystal plasticity or cellular automata models [93].…”

Section: Examples Of Applicationmentioning

confidence: 92%

Digital/virtual microstructures in application to metals engineering – A review

Madej

2017

Archives of Civil and Mechanical Engineering

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Section: Examples Of Applicationmentioning

confidence: 92%

Digital/virtual microstructures in application to metals engineering – A review

Madej

2017

Archives of Civil and Mechanical Engineering

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“…At the same time, the dislocation density decreases very fast in all neighbouring cells. In the later developments [40,41], instead of a critical value of the dislocation density, the new boundaries with the highest dislocation density chosen from all 1D CA determine appearance of the new LAB. In this approach, the number of the new boundaries is defined by the equation, which determines an expected grain size.…”

Section: Grain Refinementmentioning

confidence: 99%

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

Bajda

Svyetlichnyy

Retraint

et al. 2018

Int J Adv Manuf Technol

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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.

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“…The models referred to above mainly focus on small scale and a microstructure-based statistically equivalent representative volume element (RVE) model is often required (Majta et al, 2016;Tu et al, 2019). It is difficult to apply such models to simulations of complete hot deformation processes and to do this an accurate phenomenological or physically based micro/macro scale material model is required.…”

Section: Introductionmentioning

confidence: 99%

A CDRX-based material model for hot deformation of aluminium alloys

Jiang

et al. 2020

International Journal of Plasticity

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During hot deformation, continuous dynamic recrystallisation (CDRX) is believed to occur, and even dominates microstructural evolution in many metallic materials with high stacking fault energy, such as aluminium alloys. A unique material model for hot deformation of aluminium alloys is proposed in this paper, based on consideration of two processes: (i) increase of dislocation density, induced by plastic deformation, leading to generation, rotation and migration of low angle grain boundaries (LABs) and their transformation into high angle grain boundaries (HABs); (ii) migration of HABs leading to annihilation of both LABs and HABs. At large strain, the above counteracting processes, guided by different mechanisms, lead to saturation of HABs fraction. The model is applied to hot deformation of AA5052 and AA7050 alloys under various temperatures and strain rates, and calculated flow stress, HABs fraction and grain size evolution for both alloys agree well with the corresponding experimental data. The capability of predicting saturation of HABs fraction and average subgrain misorientation angle of both alloys under large strains demonstrate the potential applicability of the model to a wide range of hot forming process conditions.

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Modeling of the inhomogeneity of grain refinement during combined metal forming process by finite element and cellular automata methods

Cited by 25 publications

References 17 publications

Digital/virtual microstructures in application to metals engineering – A review

Digital/virtual microstructures in application to metals engineering – A review

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

A CDRX-based material model for hot deformation of aluminium alloys

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