Mathematical Modeling of Multipass Hot Deformation of Aluminum Alloy AA5083—Model Development and Validation

Ahmed, Haitham M.; Wells, Mary A.; Maijer, Daan M.; Lockhart, G.; Winden, M.R. van der

doi:10.1007/s11661-007-9101-1

Cited by 4 publications

(6 citation statements)

References 13 publications

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“…Only a few studies have been published in the literature which outline typical rolling schedules during industrial multipass rolling. 4,12,15 The rolling strategies, such as strain partitioning in different passes, could not be deduced from the reported schedules. There remains a need to understand the evolution of stored energy and subsequent microstructure evolution during multipass rolling to provide a systematic understanding of the inter-relationships between process parameters and to devise optimised rolling strategies.…”

Section: Background/literature Reviewmentioning

confidence: 99%

“…In both the strip and work roll, 4 node bilinear coupled plane strain temperature elements were used. 4 The first pass of the rolling process involved rolling the aluminium sheet in one direction. This was followed by holding the sheet for a certain period of time.…”

Section: Finite Element Modelmentioning

confidence: 99%

“…The experimental work was carried out on commercially significant aluminium alloy AA5083 samples instrumented with two centreline thermocouples and two surface ones. 4,20 A series of eleven two pass hot rolling experiments were conducted to validate the deformation and the microstructure model. The experiments were performed by rolling instrumented samples of AA5083 aluminium under a variety of temperatures, strains, strain rates and holding times both in the interpass region and after rolling is complete.…”

Section: Experimental Rolling Trials Using Pilot Scale Rolling Millmentioning

confidence: 99%

“…Experimental measurements show that the recrystallised grain size after two pass hot rolling did not exhibit significant changes compared to the start material grain size. 1,3 The sensitivity of the microstructure predictions to changes in the material constants was discussed in Refs. 1 and 3.…”

Section: Model Application To Multipass Hot Rollingmentioning

confidence: 99%

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Application of a mathematical model to multipass hot deformation of aluminium alloy AA5083

Ahmed¹,

Wells²,

Maijer³

et al. 2008

Materials Science and Technology

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Sheet metal forming operations are used extensively in industry to alter the shape of the metal through plastic deformation. A critical step in the sheet manufacturing process is hot rolling which reduces the thickness of the ingot and can significantly impact the final sheet properties based on the microstructure evolution during this operation. A two-dimensional mathematical model was developed and experimentally validated to simulate deformation and microstructure evolution during multipass hot rolling for an AA5083 aluminium alloy. The details of model development and experimental validation can be found in earlier work. In this article, the application of the validated model to further understand and optimise the material stored energy and ensuing microstructure during multipass hot rolling is described. Specifically, the model was employed to examine the effect of changing the number of rolling passes as well as strain partitioning during multipass rolling on the material stored energy and the resulting microstructure. Results indicate that the number of passes has a significant effect on the stored energy which increases as the number of passes increases. In addition within a multipass rolling schedule the way in which the strain is partitioned is also shown to have an effect on the stored energy with a decreasing strain/pass schedule providing the highest material stored energy after rolling is complete. In contrast an increasing strain/pass schedule provides the lowest stored energy in the material after rolling. This overall effect is attributed to the differences in strip temperature as the lowest exit temperature strip has the highest stored energy. The model was further utilised to generate operational curves to predict the material stored energy and subsequent recrystallisation under different rolling conditions, namely at different interpass times and total strains for various start deformation temperatures.

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Section: Background/literature Reviewmentioning

confidence: 99%

Section: Finite Element Modelmentioning

confidence: 99%

Section: Experimental Rolling Trials Using Pilot Scale Rolling Millmentioning

confidence: 99%

Section: Model Application To Multipass Hot Rollingmentioning

confidence: 99%

See 2 more Smart Citations

Application of a mathematical model to multipass hot deformation of aluminium alloy AA5083

Ahmed¹,

Wells²,

Maijer³

et al. 2008

Materials Science and Technology

Self Cite

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“…The model is able to simulate the experienced thermo‐mechanical history during hot rolling quite well. However, the slab modeled in this work was an ideal slab without any defects . Franzke et al also studied numerically the interaction effects between the work piece and tools in rolling process.…”

Section: Introductionmentioning

confidence: 99%

Simulation of Edge Defects Behavior of Slabs in the Sizing Press and Roughing Mill of a Hot Strip Mill

Foadian

Antoine

Palkowski

2016

steel research int.

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Defects in cast slabs can be developed or reduced during hot rolling depending on size, location and distribution of primary defects, quality of the alloy, as well as rolling parameters. Defects, such as cracks, voids, or inclusions and their behavior in the material during rolling severely affects the final product quality. The aim of this work is to develop a 3D finite element method (FEM) model in order to analyze the behavior of surface defects during the deformation in the sizing press and in the roughing mill during hot rolling. To reach this aim, firstly different FEM models for different ideal (without defects and misalignment) slab geometries, rolled with different reduction steps, are developed and studied. After verifying these ideal models, the defects are implemented in the models and their behaviors during deformation are studied. It could be stated that there is a borderline condition for the surface topography and position in the side of the slab, moving the defect to the top or bottom surface area. Moreover, it could be stated that defects implemented on the surface of the slab remain on the surface and do not move into the slab during sizing in the press and the roughing procedure.

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Deformation behavior during hot processing of the alloy of the Al-Mg system economically doped with scandium

Dovzhenko

Рущиц

Dovzhenko

et al. 2021

Int J Adv Manuf Technol

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Mathematical Modeling of Multipass Hot Deformation of Aluminum Alloy AA5083—Model Development and Validation

Cited by 4 publications

References 13 publications

Application of a mathematical model to multipass hot deformation of aluminium alloy AA5083

Application of a mathematical model to multipass hot deformation of aluminium alloy AA5083

Simulation of Edge Defects Behavior of Slabs in the Sizing Press and Roughing Mill of a Hot Strip Mill

Deformation behavior during hot processing of the alloy of the Al-Mg system economically doped with scandium

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