Devitrification of Zr55Cu30Al15Ni5Bulk Metallic Glass under Heating and HPT Deformation

The nanocrystal formation in Zr55Cu30Al15Ni5 bulk metallic glass was studied under heat treatment and deformation. The activation energy of crystallization under heating is 278 kJ/mol. Different crystalline p...

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Main Authors:	Galina Abrosimova, Boris Gnesin, Dmitry Gunderov, Alexandra Drozdenko, Danila Matveev, Bogdan Mironchuk, Elena Pershina, Ilia Sholin, Alexandr Aronin
Format:	Article
Language:	English
Published:	MDPI AG 2020-10-01
Series:	Metals
Subjects:	metallic glass nanostructure HPT deformation metastable phases
Online Access:	https://www.mdpi.com/2075-4701/10/10/1329

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spelling	doaj-e0a8d60738a44e22a28b1850db2977a92020-11-25T02:46:39ZengMDPI AGMetals2075-47012020-10-01101329132910.3390/met10101329Devitrification of Zr<sub>55</sub>Cu<sub>30</sub>Al<sub>15</sub>Ni<sub>5</sub>Bulk Metallic Glass under Heating and HPT DeformationGalina Abrosimova0Boris Gnesin1Dmitry Gunderov2Alexandra Drozdenko3Danila Matveev4Bogdan Mironchuk5Elena Pershina6Ilia Sholin7Alexandr Aronin8Institute of Solid State Physics RAS, 142432 Chernogolovka, RussiaInstitute of Solid State Physics RAS, 142432 Chernogolovka, RussiaUfa State Aviation Technical University, 12 K. Marx str., 450008 Ufa, RussiaInstitute of Solid State Physics RAS, 142432 Chernogolovka, RussiaInstitute of Solid State Physics RAS, 142432 Chernogolovka, RussiaInstitute of Solid State Physics RAS, 142432 Chernogolovka, RussiaInstitute of Solid State Physics RAS, 142432 Chernogolovka, RussiaInstitute of Solid State Physics RAS, 142432 Chernogolovka, RussiaInstitute of Solid State Physics RAS, 142432 Chernogolovka, RussiaThe nanocrystal formation in Zr<sub>55</sub>Cu<sub>30</sub>Al<sub>15</sub>Ni<sub>5</sub> bulk metallic glass was studied under heat treatment and deformation. The activation energy of crystallization under heating is 278 kJ/mol. Different crystalline phases were found to be formed during crystallization under heating and deformation. At the first crystallization stage, the metastable phase with a hexagonal structure (lattice of space group P6<sub>3</sub>/mmc with the parameters a = 8.66 Å, c = 14.99 Å) is formed under heat treatment. When the temperature rises, the metastable phase decays with the formation of stable crystalline phases. The crystalline Zr<sub>2</sub>Cu phase with the lattice of space group Fd3m is formed during crystallization under the action of deformation. It was determined that during deformation nanocrystals are formed primarily in the subsurface regions of the samples.https://www.mdpi.com/2075-4701/10/10/1329metallic glassnanostructureHPT deformationmetastable phases
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Galina Abrosimova Boris Gnesin Dmitry Gunderov Alexandra Drozdenko Danila Matveev Bogdan Mironchuk Elena Pershina Ilia Sholin Alexandr Aronin
spellingShingle	Galina Abrosimova Boris Gnesin Dmitry Gunderov Alexandra Drozdenko Danila Matveev Bogdan Mironchuk Elena Pershina Ilia Sholin Alexandr Aronin Devitrification of Zr<sub>55</sub>Cu<sub>30</sub>Al<sub>15</sub>Ni<sub>5</sub>Bulk Metallic Glass under Heating and HPT Deformation Metals metallic glass nanostructure HPT deformation metastable phases
author_facet	Galina Abrosimova Boris Gnesin Dmitry Gunderov Alexandra Drozdenko Danila Matveev Bogdan Mironchuk Elena Pershina Ilia Sholin Alexandr Aronin
author_sort	Galina Abrosimova
title	Devitrification of Zr<sub>55</sub>Cu<sub>30</sub>Al<sub>15</sub>Ni<sub>5</sub>Bulk Metallic Glass under Heating and HPT Deformation
title_short	Devitrification of Zr<sub>55</sub>Cu<sub>30</sub>Al<sub>15</sub>Ni<sub>5</sub>Bulk Metallic Glass under Heating and HPT Deformation
title_full	Devitrification of Zr<sub>55</sub>Cu<sub>30</sub>Al<sub>15</sub>Ni<sub>5</sub>Bulk Metallic Glass under Heating and HPT Deformation
title_fullStr	Devitrification of Zr<sub>55</sub>Cu<sub>30</sub>Al<sub>15</sub>Ni<sub>5</sub>Bulk Metallic Glass under Heating and HPT Deformation
title_full_unstemmed	Devitrification of Zr<sub>55</sub>Cu<sub>30</sub>Al<sub>15</sub>Ni<sub>5</sub>Bulk Metallic Glass under Heating and HPT Deformation
title_sort	devitrification of zr<sub>55</sub>cu<sub>30</sub>al<sub>15</sub>ni<sub>5</sub>bulk metallic glass under heating and hpt deformation
publisher	MDPI AG
series	Metals
issn	2075-4701
publishDate	2020-10-01
description	The nanocrystal formation in Zr<sub>55</sub>Cu<sub>30</sub>Al<sub>15</sub>Ni<sub>5</sub> bulk metallic glass was studied under heat treatment and deformation. The activation energy of crystallization under heating is 278 kJ/mol. Different crystalline phases were found to be formed during crystallization under heating and deformation. At the first crystallization stage, the metastable phase with a hexagonal structure (lattice of space group P6<sub>3</sub>/mmc with the parameters a = 8.66 Å, c = 14.99 Å) is formed under heat treatment. When the temperature rises, the metastable phase decays with the formation of stable crystalline phases. The crystalline Zr<sub>2</sub>Cu phase with the lattice of space group Fd3m is formed during crystallization under the action of deformation. It was determined that during deformation nanocrystals are formed primarily in the subsurface regions of the samples.
topic	metallic glass nanostructure HPT deformation metastable phases
url	https://www.mdpi.com/2075-4701/10/10/1329
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Devitrification of Zr<sub>55</sub>Cu<sub>30</sub>Al<sub>15</sub>Ni<sub>5</sub>Bulk Metallic Glass under Heating and HPT Deformation

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