Effects of an intermittent permanent magnet stirring on the melt flow and grain refinement of Al–4.5Cu alloy

Jing Zou; Haitao Zhang; Zibin Wu; Jiahui Wang; Baomian Li; Jianzhong Cui; Hiromi Nagaumi; Yinglong Li

Journal of Materials Research and Technology (Sep 2021)

Effects of an intermittent permanent magnet stirring on the melt flow and grain refinement of Al–4.5Cu alloy

Jing Zou,
Haitao Zhang,
Zibin Wu,
Jiahui Wang,
Baomian Li,
Jianzhong Cui,
Hiromi Nagaumi,
Yinglong Li

Affiliations

Jing Zou: Key Laboratory of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University, Shenyang, 110819, China
Haitao Zhang: Key Laboratory of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University, Shenyang, 110819, China; Corresponding author.
Zibin Wu: Key Laboratory of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University, Shenyang, 110819, China
Jiahui Wang: Key Laboratory for Anisotropy and Texture of Materials, Ministry of Education, Northeastern University, Shenyang, 110819, China
Baomian Li: Key Laboratory of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University, Shenyang, 110819, China
Jianzhong Cui: Key Laboratory of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University, Shenyang, 110819, China
Hiromi Nagaumi: High-Performance Metal Structural Materials Research Institute, Soochow University, Suzhou, Jiangsu, 215021, China
Yinglong Li: School of Materials Science and Engineering, Northeastern University, Shenyang, 110819, China

Journal volume & issue: Vol. 14
pp. 1585 – 1600

Abstract

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A novel technology, termed intermittent permanent magnet stirring (I-PMS), is proposed to improve the quality of aluminum alloy ingots. In this paper, the melt flow and solidification structure of Al–4.5Cu alloy were investigated through I-PMS. The grain refinement mechanism of I-PMS is also discussed. The results indicate that the melt flow patterns and distributions can be greatly affected by I-PMS. When I-PMS is applied during solidification, the melt undergoes a series of complicated periodic three-dimensional flows. Compared without I-PMS, the solidification structure of Al–4.5Cu alloy with I-PMS was remarkably refined, and the optimum solidification structure could be realized utilizing appropriate processing parameters.

Published in Journal of Materials Research and Technology

ISSN: 2238-7854 (Print); 2214-0697 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology: Mining engineering. Metallurgy
Website: https://www.journals.elsevier.com/journal-of-materials-research-and-technology/

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