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Evaluation on forming process of AZ31 alloy complex curved surfaces by clustering balls spinning method

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Abstract

Due to the poor ductility of magnesium alloys at room temperature, many new forming methods are highly desired. This paper adopts the clustering ball spinning (CBS) method to form complex curved surfaces with the AZ31 magnesium alloy sheet. Firstly, the formula was built to analyze the stress components of the auxiliary forming (AF) region. Secondly, asymmetric forming was proposed and explored through numerical simulation and experiments. It is shown with a non-rotational symmetric workpiece that asymmetric forming can yield an increased geometric accuracy compared to symmetric forming (0.57-mm deviation from the target curved surface). Relation results show that complex curved surfaces with the AZ31 magnesium alloy sheet could be formed by CBS forming process at room temperature. The microstructure of curved surfaces was tested by electron backscattered scattering detection (EBSD), and it is demonstrated that the deformation of the AZ31 sheet by the CBS method is dominated initially by the extension twinning and non-basal slip system is activated with development of forming and the improvement of the temperature.

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Availability of data and materials

All data generated or analyzed during this study are included in this published article.

Code availability

Numerical simulation software is the property of the respective software houses. No other software developed for the data analysis is available.

Abbreviations

CBS:

Clustering ball spinning

AF:

Auxiliary forming region

EBSD:

Electron backscattered scattering detection

MLRB:

Multi-layer rigid ball

FE:

Finite element

RD:

Rolling direction

TD:

Transverse direction

IPF:

Inverse pole figure

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Funding

This work was supported by the National Natural Science Foundation of China (Grant No.51275201 and 51311130129) and the Jilin Province Key R&D Plan Project (Grant No.2014020462GX).

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Zhiqing Hu had the role of revision and paper writing. Lijia Da developed the concept of the paper and simulative work. Xincheng Li and Jia Xi were in charge of the development of the experimental work.

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Correspondence to Zhiqing Hu.

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Hu, Z., Da, L., Li, X. et al. Evaluation on forming process of AZ31 alloy complex curved surfaces by clustering balls spinning method. Int J Adv Manuf Technol 120, 6301–6313 (2022). https://doi.org/10.1007/s00170-022-09011-8

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  • DOI: https://doi.org/10.1007/s00170-022-09011-8

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