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STUDY ON LASER-ASSISTED SPINNING OF AGED ALUMINUM ALLOY SHEET

1 WANG Fengqi
Co-authors:
1 RAN Jinyu 1 DU Chenyang 1 SONG Ruocun 1 YU Zhongqi
Institution:
1 Shanghai Key Laboratory of Digital Manufacture for Thin-walled Structures, Shanghai Jiao Tong University, Shanghai, China yuzhq@sjtu.edu.cn, wangfengqi@sjtu.edu.cn
Conference:
30th Anniversary International Conference on Metallurgy and Materials, Brno, Czech Republic, EU, May 26 - 28, 2021
Proceedings:
Proceedings 30th Anniversary International Conference on Metallurgy and Materials
Pages:
199-204
ISBN:
978-80-87294-99-4
ISSN:
2694-9296
DOI:
https://doi.org/10.37904/metal.2021.4109
Published:
15th September 2021
Proceedings of the conference have already been published in Scopus and we are waiting for evaluation and potential indexing in Web of Science.
Metrics:
501 views / 233 downloads
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Abstract

To explore the feasibility of directly spinning thin-walled components from aged aluminum alloy sheets under rapid laser heating, the laser-assisted spinning process of aged 7075-T6 aluminum alloy was carried out by means of an ellipsoid component shear spinning test. Compared with cold spinning, the critical thinning of the laser-assisted spun component was more than 30 % higher than that of the cold spun component, and the laser-assisted spun component has good geometric accuracy, which indicates that the formability of the 7075-T6 aluminum alloy can significantly be improved with the laser-assisted spinning process. Moreover, the Vickers hardness tests for the spun components were arranged to evaluate its mechanical properties. The measurement results show that the micro hardness of the laser-assisted spun component is significantly decreased. The reason for the decrease phenomenon is that the GP zone of the 7075-T6 re-dissolves and the fine precipitates grow up to coarse precipitates.

Keywords: Laser-assisted spinning, aged aluminum alloy, spinning ability, hardness, precipitate

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