Deformation behavior characterized by reticular shear bands and long chain twins in Mg-Gd-Nd(-Zn)-Zr alloys

We analyzed the deformation behavior of Mg-Gd-Nd(-Zn)-Zr alloys under high temperature uniaxial compression, and reported two special nucleation mechanisms of dynamic recrystallization (DRX): Nucleation and expansion of DRX based on reticular shear bands (Shear band dynamic recrystallization, SBDRX)...

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Autores principales:	Qian Zhang, Ziyi Chen, Quanan Li, Xiaoya Chen, Jiaxin Zhao, Jian Bao
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Mg-Gd-Nd(-Zn)-Zr Hot deformation Reticular shear bands {10–12} twins Dynamic recrystallization Mining engineering. Metallurgy TN1-997
Acceso en línea:	https://doaj.org/article/ae35ae37db0a4cc0a7974eb0e216dc88
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spelling	oai:doaj.org-article:ae35ae37db0a4cc0a7974eb0e216dc882021-11-18T04:49:14ZDeformation behavior characterized by reticular shear bands and long chain twins in Mg-Gd-Nd(-Zn)-Zr alloys2238-785410.1016/j.jmrt.2021.11.020https://doaj.org/article/ae35ae37db0a4cc0a7974eb0e216dc882021-11-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2238785421013004https://doaj.org/toc/2238-7854We analyzed the deformation behavior of Mg-Gd-Nd(-Zn)-Zr alloys under high temperature uniaxial compression, and reported two special nucleation mechanisms of dynamic recrystallization (DRX): Nucleation and expansion of DRX based on reticular shear bands (Shear band dynamic recrystallization, SBDRX) and long chain twins (Twin dynamic recrystallization, TDRX). The reticular shear bands in Mg-Gd-Nd-Zr alloy are mainly caused by the crossing of strain gradients from different directions, which is related to the high activity of pyramidal <c+a> slip at high temperature. The addition of Zn makes the DRX mechanism mutate, and TDRX is dominant in Mg-Gd-Nd-Zn-Zr alloy. The nucleation of a large number of {10–12} twins is abnormal, which may be related to the decrease of I2 stacking fault energy caused by Gd/Nd–Zn compound addition. Based on the mechanical properties and microstructure, it can be concluded that the addition of Zn can promote the DRX, reduce the deformation resistance and improve the workability.Qian ZhangZiyi ChenQuanan LiXiaoya ChenJiaxin ZhaoJian BaoElsevierarticleMg-Gd-Nd(-Zn)-ZrHot deformationReticular shear bands{10–12} twinsDynamic recrystallizationMining engineering. MetallurgyTN1-997ENJournal of Materials Research and Technology, Vol 15, Iss , Pp 5326-5342 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Mg-Gd-Nd(-Zn)-Zr Hot deformation Reticular shear bands {10–12} twins Dynamic recrystallization Mining engineering. Metallurgy TN1-997
spellingShingle	Mg-Gd-Nd(-Zn)-Zr Hot deformation Reticular shear bands {10–12} twins Dynamic recrystallization Mining engineering. Metallurgy TN1-997 Qian Zhang Ziyi Chen Quanan Li Xiaoya Chen Jiaxin Zhao Jian Bao Deformation behavior characterized by reticular shear bands and long chain twins in Mg-Gd-Nd(-Zn)-Zr alloys
description	We analyzed the deformation behavior of Mg-Gd-Nd(-Zn)-Zr alloys under high temperature uniaxial compression, and reported two special nucleation mechanisms of dynamic recrystallization (DRX): Nucleation and expansion of DRX based on reticular shear bands (Shear band dynamic recrystallization, SBDRX) and long chain twins (Twin dynamic recrystallization, TDRX). The reticular shear bands in Mg-Gd-Nd-Zr alloy are mainly caused by the crossing of strain gradients from different directions, which is related to the high activity of pyramidal <c+a> slip at high temperature. The addition of Zn makes the DRX mechanism mutate, and TDRX is dominant in Mg-Gd-Nd-Zn-Zr alloy. The nucleation of a large number of {10–12} twins is abnormal, which may be related to the decrease of I2 stacking fault energy caused by Gd/Nd–Zn compound addition. Based on the mechanical properties and microstructure, it can be concluded that the addition of Zn can promote the DRX, reduce the deformation resistance and improve the workability.
format	article
author	Qian Zhang Ziyi Chen Quanan Li Xiaoya Chen Jiaxin Zhao Jian Bao
author_facet	Qian Zhang Ziyi Chen Quanan Li Xiaoya Chen Jiaxin Zhao Jian Bao
author_sort	Qian Zhang
title	Deformation behavior characterized by reticular shear bands and long chain twins in Mg-Gd-Nd(-Zn)-Zr alloys
title_short	Deformation behavior characterized by reticular shear bands and long chain twins in Mg-Gd-Nd(-Zn)-Zr alloys
title_full	Deformation behavior characterized by reticular shear bands and long chain twins in Mg-Gd-Nd(-Zn)-Zr alloys
title_fullStr	Deformation behavior characterized by reticular shear bands and long chain twins in Mg-Gd-Nd(-Zn)-Zr alloys
title_full_unstemmed	Deformation behavior characterized by reticular shear bands and long chain twins in Mg-Gd-Nd(-Zn)-Zr alloys
title_sort	deformation behavior characterized by reticular shear bands and long chain twins in mg-gd-nd(-zn)-zr alloys
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/ae35ae37db0a4cc0a7974eb0e216dc88
work_keys_str_mv	AT qianzhang deformationbehaviorcharacterizedbyreticularshearbandsandlongchaintwinsinmggdndznzralloys AT ziyichen deformationbehaviorcharacterizedbyreticularshearbandsandlongchaintwinsinmggdndznzralloys AT quananli deformationbehaviorcharacterizedbyreticularshearbandsandlongchaintwinsinmggdndznzralloys AT xiaoyachen deformationbehaviorcharacterizedbyreticularshearbandsandlongchaintwinsinmggdndznzralloys AT jiaxinzhao deformationbehaviorcharacterizedbyreticularshearbandsandlongchaintwinsinmggdndznzralloys AT jianbao deformationbehaviorcharacterizedbyreticularshearbandsandlongchaintwinsinmggdndznzralloys
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Deformation behavior characterized by reticular shear bands and long chain twins in Mg-Gd-Nd(-Zn)-Zr alloys

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