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High pressure torsion induced strustural transformation in Ti- and Zr-based amorphous alloys. / Gunderov, Dmitry ; Boltynjuk, Evgeniy ; Ubyivovk, Evgeny ; Churakova, Anna ; Abrosimova, G.E.; Ситдиков, Виль Даянович; Kilmametov, A. R.; Valiev, Ruslan Z. .

In: IOP Conference Series: Materials Science and Engineering, No. 447, 012052, 2018.

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@article{7dcb539a24de46e2a863d5d192c51d5a,
title = "High pressure torsion induced strustural transformation in Ti- and Zr-based amorphous alloys",
abstract = "The melt-spun (MS) Ti50Ni25Cu25 alloy and the Zr62Cu22Al10Fe5Dy1 bulk metallic glass (BMG) were subjected to high pressure torsion (HPT). X-ray diffraction (XRD) measurements show a shift of the first diffraction halo to a low angle after HPT processing, which corresponds to an increase in the values of the radius of the first coordination sphere and the free volume. Direct density measurements confirmed an increase in free volume values. A special TEM procedure was used for a detailed study of the microstructure of both amorphous alloys after HPT processing. The study revealed the formation of a large density of shear bands (SBs) in both alloys. Nanocrystals are formed directly in shear bands as a result of strain-induced nanocrystallization. Amorphous nanoclusters with a size of 20 nm are formed in an amorphous matrix surrounding the SBs in the HPT-processed MS alloy Ti50Ni25Cu25. The formation of nanoclusters was not observed in BMG Zr62Cu22Al10Fe5Dy1 after HPT processing.",
author = "Dmitry Gunderov and Evgeniy Boltynjuk and Evgeny Ubyivovk and Anna Churakova and G.E. Abrosimova and Ситдиков, {Виль Даянович} and Kilmametov, {A. R.} and Valiev, {Ruslan Z.}",
year = "2018",
language = "English",
journal = "IOP Conference Series: Materials Science and Engineering",
issn = "1757-8981",
publisher = "IOP Publishing Ltd.",
number = "447",
note = "Open School-Conference of NIS Countries on Ultrafine Grained and Nanostructured Materials 2018, UFGNM 2018 ; Conference date: 01-10-2018 Through 05-10-2018",

}

RIS

TY - JOUR

T1 - High pressure torsion induced strustural transformation in Ti- and Zr-based amorphous alloys

AU - Gunderov, Dmitry

AU - Boltynjuk, Evgeniy

AU - Ubyivovk, Evgeny

AU - Churakova, Anna

AU - Abrosimova, G.E.

AU - Ситдиков, Виль Даянович

AU - Kilmametov, A. R.

AU - Valiev, Ruslan Z.

PY - 2018

Y1 - 2018

N2 - The melt-spun (MS) Ti50Ni25Cu25 alloy and the Zr62Cu22Al10Fe5Dy1 bulk metallic glass (BMG) were subjected to high pressure torsion (HPT). X-ray diffraction (XRD) measurements show a shift of the first diffraction halo to a low angle after HPT processing, which corresponds to an increase in the values of the radius of the first coordination sphere and the free volume. Direct density measurements confirmed an increase in free volume values. A special TEM procedure was used for a detailed study of the microstructure of both amorphous alloys after HPT processing. The study revealed the formation of a large density of shear bands (SBs) in both alloys. Nanocrystals are formed directly in shear bands as a result of strain-induced nanocrystallization. Amorphous nanoclusters with a size of 20 nm are formed in an amorphous matrix surrounding the SBs in the HPT-processed MS alloy Ti50Ni25Cu25. The formation of nanoclusters was not observed in BMG Zr62Cu22Al10Fe5Dy1 after HPT processing.

AB - The melt-spun (MS) Ti50Ni25Cu25 alloy and the Zr62Cu22Al10Fe5Dy1 bulk metallic glass (BMG) were subjected to high pressure torsion (HPT). X-ray diffraction (XRD) measurements show a shift of the first diffraction halo to a low angle after HPT processing, which corresponds to an increase in the values of the radius of the first coordination sphere and the free volume. Direct density measurements confirmed an increase in free volume values. A special TEM procedure was used for a detailed study of the microstructure of both amorphous alloys after HPT processing. The study revealed the formation of a large density of shear bands (SBs) in both alloys. Nanocrystals are formed directly in shear bands as a result of strain-induced nanocrystallization. Amorphous nanoclusters with a size of 20 nm are formed in an amorphous matrix surrounding the SBs in the HPT-processed MS alloy Ti50Ni25Cu25. The formation of nanoclusters was not observed in BMG Zr62Cu22Al10Fe5Dy1 after HPT processing.

UR - https://iopscience.iop.org/article/10.1088/1757-899X/447/1/012052

UR - https://www.researchgate.net/publication/329107989_High_pressure_torsion_induced_structural_transformations_in_Ti-_and_Zr-based_amorphous_alloys

M3 - Article

JO - IOP Conference Series: Materials Science and Engineering

JF - IOP Conference Series: Materials Science and Engineering

SN - 1757-8981

IS - 447

M1 - 012052

T2 - Open School-Conference of NIS Countries on Ultrafine Grained and Nanostructured Materials 2018, UFGNM 2018

Y2 - 1 October 2018 through 5 October 2018

ER -

ID: 36059904