Pronounced Plasticity Caused by Phase Separation and β-relaxation Synergistically in Zr–Cu–Al–Mo Bulk Metallic Glasses

Abstract Bulk metallic glasses (BMGs) are known to have extraordinary merits such as ultrahigh strength and dynamic toughness etc. but tied to the detrimental brittleness, which has become a critical issue to the engineering application and understanding the glass nature. In this article, we report...

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Autores principales:	Tuo Wang, Lu Wang, Qinjia Wang, Yanhui Liu, Xidong Hui
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/fa4a91003f8244d087ad9b72861ac5ae
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spelling	oai:doaj.org-article:fa4a91003f8244d087ad9b72861ac5ae2021-12-02T15:04:55ZPronounced Plasticity Caused by Phase Separation and β-relaxation Synergistically in Zr–Cu–Al–Mo Bulk Metallic Glasses10.1038/s41598-017-01283-52045-2322https://doaj.org/article/fa4a91003f8244d087ad9b72861ac5ae2017-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-01283-5https://doaj.org/toc/2045-2322Abstract Bulk metallic glasses (BMGs) are known to have extraordinary merits such as ultrahigh strength and dynamic toughness etc. but tied to the detrimental brittleness, which has become a critical issue to the engineering application and understanding the glass nature. In this article, we report a new class of Zr-Cu-Al-Mo BMGs with extraordinary plastic strain above 20%. “Work-hardening” effect after yielding in a wide range of plastic deformation process has been detected for this kind of BMGs. Compositional heterogeneity, which can be classified into ZrMo- and Cu-rich zones, was differentiated in this kind of BMG. Pronounced humps have been observed on the high frequency kinetic spectrum in Mo containing BMGs, which is the indicator of β-relaxation transition. The underlying mechanism for the excellent plastic deforming ability of this class of BMGs is ascribed to the synergistic effects of soft ZrMo-rich glass formed through phase separation and abundant flow units which related to β-relaxation.Tuo WangLu WangQinjia WangYanhui LiuXidong HuiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-9 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Tuo Wang Lu Wang Qinjia Wang Yanhui Liu Xidong Hui Pronounced Plasticity Caused by Phase Separation and β-relaxation Synergistically in Zr–Cu–Al–Mo Bulk Metallic Glasses
description	Abstract Bulk metallic glasses (BMGs) are known to have extraordinary merits such as ultrahigh strength and dynamic toughness etc. but tied to the detrimental brittleness, which has become a critical issue to the engineering application and understanding the glass nature. In this article, we report a new class of Zr-Cu-Al-Mo BMGs with extraordinary plastic strain above 20%. “Work-hardening” effect after yielding in a wide range of plastic deformation process has been detected for this kind of BMGs. Compositional heterogeneity, which can be classified into ZrMo- and Cu-rich zones, was differentiated in this kind of BMG. Pronounced humps have been observed on the high frequency kinetic spectrum in Mo containing BMGs, which is the indicator of β-relaxation transition. The underlying mechanism for the excellent plastic deforming ability of this class of BMGs is ascribed to the synergistic effects of soft ZrMo-rich glass formed through phase separation and abundant flow units which related to β-relaxation.
format	article
author	Tuo Wang Lu Wang Qinjia Wang Yanhui Liu Xidong Hui
author_facet	Tuo Wang Lu Wang Qinjia Wang Yanhui Liu Xidong Hui
author_sort	Tuo Wang
title	Pronounced Plasticity Caused by Phase Separation and β-relaxation Synergistically in Zr–Cu–Al–Mo Bulk Metallic Glasses
title_short	Pronounced Plasticity Caused by Phase Separation and β-relaxation Synergistically in Zr–Cu–Al–Mo Bulk Metallic Glasses
title_full	Pronounced Plasticity Caused by Phase Separation and β-relaxation Synergistically in Zr–Cu–Al–Mo Bulk Metallic Glasses
title_fullStr	Pronounced Plasticity Caused by Phase Separation and β-relaxation Synergistically in Zr–Cu–Al–Mo Bulk Metallic Glasses
title_full_unstemmed	Pronounced Plasticity Caused by Phase Separation and β-relaxation Synergistically in Zr–Cu–Al–Mo Bulk Metallic Glasses
title_sort	pronounced plasticity caused by phase separation and β-relaxation synergistically in zr–cu–al–mo bulk metallic glasses
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/fa4a91003f8244d087ad9b72861ac5ae
work_keys_str_mv	AT tuowang pronouncedplasticitycausedbyphaseseparationandbrelaxationsynergisticallyinzrcualmobulkmetallicglasses AT luwang pronouncedplasticitycausedbyphaseseparationandbrelaxationsynergisticallyinzrcualmobulkmetallicglasses AT qinjiawang pronouncedplasticitycausedbyphaseseparationandbrelaxationsynergisticallyinzrcualmobulkmetallicglasses AT yanhuiliu pronouncedplasticitycausedbyphaseseparationandbrelaxationsynergisticallyinzrcualmobulkmetallicglasses AT xidonghui pronouncedplasticitycausedbyphaseseparationandbrelaxationsynergisticallyinzrcualmobulkmetallicglasses
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Pronounced Plasticity Caused by Phase Separation and β-relaxation Synergistically in Zr–Cu–Al–Mo Bulk Metallic Glasses

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