Research on grain refinement and its mechanism of pure aluminum under a novel permanent magnet stirring

Fine, uniform and equiaxed grain structure is one of the most striking features of high-quality Al targets. In general, the imposition of magnetic stirring on the liquid Al during the solidification process is an effective method to promote grain refinement. In the present study, a self–made rotatin...

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Autores principales:	Jing Zou, Haitao Zhang, Xiaoyang Qiao, Zibin Wu, Lei Wang, Yinglong Li, Hiromi Nagaumi, Baomian Li, Jianzhong Cui
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Grain refinement Pure Al Temperature change Permanent magnet stirring Solidification Mining engineering. Metallurgy TN1-997
Acceso en línea:	https://doaj.org/article/ec8c8f476b0d4711ba0284dd37bb0062
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spelling	oai:doaj.org-article:ec8c8f476b0d4711ba0284dd37bb00622021-11-28T04:32:41ZResearch on grain refinement and its mechanism of pure aluminum under a novel permanent magnet stirring2238-785410.1016/j.jmrt.2021.11.056https://doaj.org/article/ec8c8f476b0d4711ba0284dd37bb00622021-11-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2238785421013363https://doaj.org/toc/2238-7854Fine, uniform and equiaxed grain structure is one of the most striking features of high-quality Al targets. In general, the imposition of magnetic stirring on the liquid Al during the solidification process is an effective method to promote grain refinement. In the present study, a self–made rotating system of permanent magnets is reported to stir liquid Al during solidification. The temperature change and grain structure of pure Al subjected to a permanent magnet stirring (PMS) are analyzed. The experimental results reveal that the forced convection driven by PMS can lead to a more homogeneous temperature field in the melt. Meanwhile, PMS can greatly refine the grain structure of pure Al and eliminate cavities, but it may induce more gas holes in the ingots. Moreover, a fresh intermittent permanent magnet stirring (I-PMS) approach has been proposed and successfully applied to realize grain refinement of pure Al. Some casting problems can be perfectly solved using suitable processing parameters. Through some valuable experimental works, systematic researches on grain refinement of pure Al under PMS are performed to better understand its refining mechanisms. Therefore, this article further enhances our understanding of related fields and fills the research blank.Jing ZouHaitao ZhangXiaoyang QiaoZibin WuLei WangYinglong LiHiromi NagaumiBaomian LiJianzhong CuiElsevierarticleGrain refinementPure AlTemperature changePermanent magnet stirringSolidificationMining engineering. MetallurgyTN1-997ENJournal of Materials Research and Technology, Vol 15, Iss , Pp 5894-5905 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Grain refinement Pure Al Temperature change Permanent magnet stirring Solidification Mining engineering. Metallurgy TN1-997
spellingShingle	Grain refinement Pure Al Temperature change Permanent magnet stirring Solidification Mining engineering. Metallurgy TN1-997 Jing Zou Haitao Zhang Xiaoyang Qiao Zibin Wu Lei Wang Yinglong Li Hiromi Nagaumi Baomian Li Jianzhong Cui Research on grain refinement and its mechanism of pure aluminum under a novel permanent magnet stirring
description	Fine, uniform and equiaxed grain structure is one of the most striking features of high-quality Al targets. In general, the imposition of magnetic stirring on the liquid Al during the solidification process is an effective method to promote grain refinement. In the present study, a self–made rotating system of permanent magnets is reported to stir liquid Al during solidification. The temperature change and grain structure of pure Al subjected to a permanent magnet stirring (PMS) are analyzed. The experimental results reveal that the forced convection driven by PMS can lead to a more homogeneous temperature field in the melt. Meanwhile, PMS can greatly refine the grain structure of pure Al and eliminate cavities, but it may induce more gas holes in the ingots. Moreover, a fresh intermittent permanent magnet stirring (I-PMS) approach has been proposed and successfully applied to realize grain refinement of pure Al. Some casting problems can be perfectly solved using suitable processing parameters. Through some valuable experimental works, systematic researches on grain refinement of pure Al under PMS are performed to better understand its refining mechanisms. Therefore, this article further enhances our understanding of related fields and fills the research blank.
format	article
author	Jing Zou Haitao Zhang Xiaoyang Qiao Zibin Wu Lei Wang Yinglong Li Hiromi Nagaumi Baomian Li Jianzhong Cui
author_facet	Jing Zou Haitao Zhang Xiaoyang Qiao Zibin Wu Lei Wang Yinglong Li Hiromi Nagaumi Baomian Li Jianzhong Cui
author_sort	Jing Zou
title	Research on grain refinement and its mechanism of pure aluminum under a novel permanent magnet stirring
title_short	Research on grain refinement and its mechanism of pure aluminum under a novel permanent magnet stirring
title_full	Research on grain refinement and its mechanism of pure aluminum under a novel permanent magnet stirring
title_fullStr	Research on grain refinement and its mechanism of pure aluminum under a novel permanent magnet stirring
title_full_unstemmed	Research on grain refinement and its mechanism of pure aluminum under a novel permanent magnet stirring
title_sort	research on grain refinement and its mechanism of pure aluminum under a novel permanent magnet stirring
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/ec8c8f476b0d4711ba0284dd37bb0062
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Research on grain refinement and its mechanism of pure aluminum under a novel permanent magnet stirring

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