Optimization of the Severe Plastic Deformation Processes for the Grain Refinement of Al6060 Alloy Using 3D FEM Analysis

López-Chipres, E.; García-Sánchez, E.; Ortiz-Cuellar, E.; Hernández-Rodríguez, M.A.L.; Colás, Rafael

doi:10.1007/s11665-010-9783-1

Cited by 7 publications

(2 citation statements)

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“…FEM and other general numerical simulation methods reduce the number of required experiments, as well as replace the more expensive and complex experiments, thus being a great tool to optimize the final shape of the workpiece [19]. An extensive range of materials, processes, and variables can be simulated.…”

Section: Introductionmentioning

confidence: 99%

2D–3D Digital Image Correlation Comparative Analysis for Indentation Process

et al. 2019

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Nowadays, localized forming operations, such as incremental forming processes, are being developed as an alternative to conventional machining or forming techniques. An indentation process is the main action that takes places in these forming activities, allowing small, localized deformations. It is essential to have the knowledge of the material behavior under the punch and the transmitted forces to achieve correct control of the entire procedure. This paper presents the work carried out with the digital image correlation (DIC) technique applied to the study of the material flow that takes place under an indentation process. The material flow analysis is performed under 2D and 3D conditions, establishing the methodology for the calibration and implementation for each alternative. Two-dimensional DIC has been proven to be a satisfactory technique compared with the 3D method, showing results in good agreement with experimental tests and models developed by the finite element method. Notwithstanding, part of the indented material flows under the punch, emerging on the front surface and generating a dead zone that can only be addressed with a 3D technique. So, the main objective is to carry out a comparison between the 2D and 3D techniques to identify if the 3D application could be mandatory for this type of process. Also, a 2D-3D mix analysis is proposed for study cases in which it is necessary to know the material flow in that specific area of the workpiece.

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Section: Introductionmentioning

confidence: 99%

2D–3D Digital Image Correlation Comparative Analysis for Indentation Process

et al. 2019

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“…The ECAP research result of aluminum containing 5 wt.% iron showed that the material strength increased from 102 to 261 MPa and reached 272 MPa by artificial aging, which proved this process had a significantly advantage to improve product performance. López-Chipres [9] et al used finite element software DEFORM to comprehensively analyze the This article is completed under my independent research and without the phenomenon that quotes largely or plagiarizes other articles and so on. Therefore, I will be corresponding responsible for the thing.…”

Section: Introductionmentioning

confidence: 99%

Investigation of 7A09 aluminum alloy prepared by continuous variable cross-section direct extrusion (CVCDE)

Zeng

2015

Int J Adv Manuf Technol

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Preparation-forming is a common method to get high-performance alloy products, but lots of shortcomings exist in this method, such as complex and long process, high costs, and so on. As a new severe plastic deformation technology, continuous variable cross-section direct extrusion (CVCDE) is used to solve these problems. Taking 7A09 aluminum alloy, for example, the research result of CVCDE process shows that actual material flow distance is longer than conventional extrusion, and the axial stress on product surface in the die orifice is also significantly decreased. At the same time, the material flows through die cavity sequentially and suffers "upsetting-extrusion-upsetting" continuous loading, which will result in a severe deformation. By analysis of the microstructure and mechanical properties of 7A09 aluminum alloy was obtained under different conditions, it can be known that the grains become smaller and more round, and the uniformity gets also improved after CVCDE. Compared with conventional extrusion, the grain refinement of CVCDE with one and two interim dies increased by 22.4 and 41.5 %, respectively, and tensile strength and elongation also increase. To sum up, CVCDE with high efficiency, low consumption, short process, and other unique advantages in obtaining high-performance alloy products will be certainly raised wide concern.

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