Hot deformation behavior and dynamic precipitation characteristics of Mg-Gd-Nd(-Sm)-Zr alloys

We deeply analyze the deformation behavior of Mg-Gd-Nd(-Sm)-Zr alloys under high temperature uniaxial compression, and explore the influence mechanism of Sm on the microstructure evolution of Mg-Gd-Nd-Zr alloy. We can draw the following conclusions: the addition of Sm delays the dynamic recrystalliz...

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Autores principales:	Ziyi Chen, Qian Zhang, Quanan Li, Hongxi Zhu, Xiaoya Chen, Xiangyu Li, Peijun Chen, Jian Bao
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Mg-Gd-Nd(-Sm)-Zr Hot deformation Flow stress Dynamic recrystallization Dynamic precipitation Mining engineering. Metallurgy TN1-997
Acceso en línea:	https://doaj.org/article/4682d5df8bb14f52b137afa60485c508
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spelling	oai:doaj.org-article:4682d5df8bb14f52b137afa60485c5082021-11-22T04:26:27ZHot deformation behavior and dynamic precipitation characteristics of Mg-Gd-Nd(-Sm)-Zr alloys2238-785410.1016/j.jmrt.2021.11.031https://doaj.org/article/4682d5df8bb14f52b137afa60485c5082021-11-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2238785421013107https://doaj.org/toc/2238-7854We deeply analyze the deformation behavior of Mg-Gd-Nd(-Sm)-Zr alloys under high temperature uniaxial compression, and explore the influence mechanism of Sm on the microstructure evolution of Mg-Gd-Nd-Zr alloy. We can draw the following conclusions: the addition of Sm delays the dynamic recrystallization of Mg-Gd-Nd-Zr alloy, resulting in the increase of stress and the decrease of machinability. There is no dynamic precipitation in Mg-Gd-Nd-Zr alloy at 400 °C/0.01 s−1/0.7, which is related to the high solute-vacancy binding energy of Nd. Under the same deformation condition, two kinds of dynamic precipitates with different size and shape appear in Mg-Gd-Nd-Sm-Zr alloy: fine particle phase and coarse lamellar phase. The two precipitates are Mg(Gd, Nd, Sm) with body-centered cubic structure, and are incoherent with the matrix. The coarse lamellar phase effectively hinders dislocation rearrangement, which explains the delay of dynamic recrystallization.Ziyi ChenQian ZhangQuanan LiHongxi ZhuXiaoya ChenXiangyu LiPeijun ChenJian BaoElsevierarticleMg-Gd-Nd(-Sm)-ZrHot deformationFlow stressDynamic recrystallizationDynamic precipitationMining engineering. MetallurgyTN1-997ENJournal of Materials Research and Technology, Vol 15, Iss , Pp 5582-5596 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Mg-Gd-Nd(-Sm)-Zr Hot deformation Flow stress Dynamic recrystallization Dynamic precipitation Mining engineering. Metallurgy TN1-997
spellingShingle	Mg-Gd-Nd(-Sm)-Zr Hot deformation Flow stress Dynamic recrystallization Dynamic precipitation Mining engineering. Metallurgy TN1-997 Ziyi Chen Qian Zhang Quanan Li Hongxi Zhu Xiaoya Chen Xiangyu Li Peijun Chen Jian Bao Hot deformation behavior and dynamic precipitation characteristics of Mg-Gd-Nd(-Sm)-Zr alloys
description	We deeply analyze the deformation behavior of Mg-Gd-Nd(-Sm)-Zr alloys under high temperature uniaxial compression, and explore the influence mechanism of Sm on the microstructure evolution of Mg-Gd-Nd-Zr alloy. We can draw the following conclusions: the addition of Sm delays the dynamic recrystallization of Mg-Gd-Nd-Zr alloy, resulting in the increase of stress and the decrease of machinability. There is no dynamic precipitation in Mg-Gd-Nd-Zr alloy at 400 °C/0.01 s−1/0.7, which is related to the high solute-vacancy binding energy of Nd. Under the same deformation condition, two kinds of dynamic precipitates with different size and shape appear in Mg-Gd-Nd-Sm-Zr alloy: fine particle phase and coarse lamellar phase. The two precipitates are Mg(Gd, Nd, Sm) with body-centered cubic structure, and are incoherent with the matrix. The coarse lamellar phase effectively hinders dislocation rearrangement, which explains the delay of dynamic recrystallization.
format	article
author	Ziyi Chen Qian Zhang Quanan Li Hongxi Zhu Xiaoya Chen Xiangyu Li Peijun Chen Jian Bao
author_facet	Ziyi Chen Qian Zhang Quanan Li Hongxi Zhu Xiaoya Chen Xiangyu Li Peijun Chen Jian Bao
author_sort	Ziyi Chen
title	Hot deformation behavior and dynamic precipitation characteristics of Mg-Gd-Nd(-Sm)-Zr alloys
title_short	Hot deformation behavior and dynamic precipitation characteristics of Mg-Gd-Nd(-Sm)-Zr alloys
title_full	Hot deformation behavior and dynamic precipitation characteristics of Mg-Gd-Nd(-Sm)-Zr alloys
title_fullStr	Hot deformation behavior and dynamic precipitation characteristics of Mg-Gd-Nd(-Sm)-Zr alloys
title_full_unstemmed	Hot deformation behavior and dynamic precipitation characteristics of Mg-Gd-Nd(-Sm)-Zr alloys
title_sort	hot deformation behavior and dynamic precipitation characteristics of mg-gd-nd(-sm)-zr alloys
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/4682d5df8bb14f52b137afa60485c508
work_keys_str_mv	AT ziyichen hotdeformationbehavioranddynamicprecipitationcharacteristicsofmggdndsmzralloys AT qianzhang hotdeformationbehavioranddynamicprecipitationcharacteristicsofmggdndsmzralloys AT quananli hotdeformationbehavioranddynamicprecipitationcharacteristicsofmggdndsmzralloys AT hongxizhu hotdeformationbehavioranddynamicprecipitationcharacteristicsofmggdndsmzralloys AT xiaoyachen hotdeformationbehavioranddynamicprecipitationcharacteristicsofmggdndsmzralloys AT xiangyuli hotdeformationbehavioranddynamicprecipitationcharacteristicsofmggdndsmzralloys AT peijunchen hotdeformationbehavioranddynamicprecipitationcharacteristicsofmggdndsmzralloys AT jianbao hotdeformationbehavioranddynamicprecipitationcharacteristicsofmggdndsmzralloys
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Hot deformation behavior and dynamic precipitation characteristics of Mg-Gd-Nd(-Sm)-Zr alloys

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