The Effect of Nickel on the Viscosity of Iron-Based Multicomponent Melts

In this work, we investigated the temperature dependence of the kinematic viscosity of multicomponent Fe72.5−xNixCu1Nb2Mo1.5Si14</sub...

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Autores principales:	Vladimir S. Tsepelev, Yuri N. Starodubtsev, Viktor V. Konashkov
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	kinematic viscosity arrhenius plot activation energy cluster liquid-liquid structure transition Mining engineering. Metallurgy TN1-997
Acceso en línea:	https://doaj.org/article/bc29e08d885a46788babe9361b7703f1
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spelling	oai:doaj.org-article:bc29e08d885a46788babe9361b7703f12021-11-25T18:21:29ZThe Effect of Nickel on the Viscosity of Iron-Based Multicomponent Melts10.3390/met111117242075-4701https://doaj.org/article/bc29e08d885a46788babe9361b7703f12021-10-01T00:00:00Zhttps://www.mdpi.com/2075-4701/11/11/1724https://doaj.org/toc/2075-4701In this work, we investigated the temperature dependence of the kinematic viscosity of multicomponent Fe<sub>72.5−<i>x</i></sub>Ni<i><sub>x</sub></i>Cu<sub>1</sub>Nb<sub>2</sub>Mo<sub>1.5</sub>Si<sub>14</sub>B<sub>9</sub> melts with a Ni content of up to 12.7 at. %. The peculiarities of the temperature dependence of Ni-containing melts were explained by the tendency of Ni atoms to surface segregation. Ni atoms are concentrated near the interfaces of the liquid and solid phases in the mushy zone at the stage of melting and restrain the melting of the solid phase. With increasing Ni content, the Arrhenius type of viscous flow begins at a higher temperature. Ni atoms are concentrated at the periphery of clusters, increasing their size and decreasing their mobility. The movement of Ni-containing clusters increases the activation energy and decreases the kinematic viscosity. The change in the activation energy at a temperature of about 1700 K was associated with a liquid-liquid structure transition (LLST). This structural transition is reversible since it is observed both at the heating and cooling stages. The increase in kinematic viscosity at temperatures above 1900 K was associated with the decomposition of high-temperature clusters based on cementite and silicon oxides.Vladimir S. TsepelevYuri N. StarodubtsevViktor V. KonashkovMDPI AGarticlekinematic viscosityarrhenius plotactivation energyclusterliquid-liquid structure transitionMining engineering. MetallurgyTN1-997ENMetals, Vol 11, Iss 1724, p 1724 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	kinematic viscosity arrhenius plot activation energy cluster liquid-liquid structure transition Mining engineering. Metallurgy TN1-997
spellingShingle	kinematic viscosity arrhenius plot activation energy cluster liquid-liquid structure transition Mining engineering. Metallurgy TN1-997 Vladimir S. Tsepelev Yuri N. Starodubtsev Viktor V. Konashkov The Effect of Nickel on the Viscosity of Iron-Based Multicomponent Melts
description	In this work, we investigated the temperature dependence of the kinematic viscosity of multicomponent Fe<sub>72.5−<i>x</i></sub>Ni<i><sub>x</sub></i>Cu<sub>1</sub>Nb<sub>2</sub>Mo<sub>1.5</sub>Si<sub>14</sub>B<sub>9</sub> melts with a Ni content of up to 12.7 at. %. The peculiarities of the temperature dependence of Ni-containing melts were explained by the tendency of Ni atoms to surface segregation. Ni atoms are concentrated near the interfaces of the liquid and solid phases in the mushy zone at the stage of melting and restrain the melting of the solid phase. With increasing Ni content, the Arrhenius type of viscous flow begins at a higher temperature. Ni atoms are concentrated at the periphery of clusters, increasing their size and decreasing their mobility. The movement of Ni-containing clusters increases the activation energy and decreases the kinematic viscosity. The change in the activation energy at a temperature of about 1700 K was associated with a liquid-liquid structure transition (LLST). This structural transition is reversible since it is observed both at the heating and cooling stages. The increase in kinematic viscosity at temperatures above 1900 K was associated with the decomposition of high-temperature clusters based on cementite and silicon oxides.
format	article
author	Vladimir S. Tsepelev Yuri N. Starodubtsev Viktor V. Konashkov
author_facet	Vladimir S. Tsepelev Yuri N. Starodubtsev Viktor V. Konashkov
author_sort	Vladimir S. Tsepelev
title	The Effect of Nickel on the Viscosity of Iron-Based Multicomponent Melts
title_short	The Effect of Nickel on the Viscosity of Iron-Based Multicomponent Melts
title_full	The Effect of Nickel on the Viscosity of Iron-Based Multicomponent Melts
title_fullStr	The Effect of Nickel on the Viscosity of Iron-Based Multicomponent Melts
title_full_unstemmed	The Effect of Nickel on the Viscosity of Iron-Based Multicomponent Melts
title_sort	effect of nickel on the viscosity of iron-based multicomponent melts
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/bc29e08d885a46788babe9361b7703f1
work_keys_str_mv	AT vladimirstsepelev theeffectofnickelontheviscosityofironbasedmulticomponentmelts AT yurinstarodubtsev theeffectofnickelontheviscosityofironbasedmulticomponentmelts AT viktorvkonashkov theeffectofnickelontheviscosityofironbasedmulticomponentmelts AT vladimirstsepelev effectofnickelontheviscosityofironbasedmulticomponentmelts AT yurinstarodubtsev effectofnickelontheviscosityofironbasedmulticomponentmelts AT viktorvkonashkov effectofnickelontheviscosityofironbasedmulticomponentmelts
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The Effect of Nickel on the Viscosity of Iron-Based Multicomponent Melts

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