Выдержка

High-pressure torsion is used to consolidate the melt-spun Cu50Zr50 amorphous ribbons. The high-pressure torsion processing is conducted varying the strain using different numbers of anvil rotations. Optical microscopy (OM) and transmission electron microscopy (TEM), X-ray diffraction (XRD) are used to study the effect of processing regimes on consolidation and structural changes. Oxide layers, which are present on the surface of the initial amorphous ribbons, hinder the consolidation of ribbons into fully dense samples. Individual ribbons are clearly observed in the central region of the specimen deformed for one rotation, whereas the edge regions look more consolidated due to the strain gradient along the radius during processing. An increase in strain (by increasing the number of rotations) improves the homogeneity of the consolidated samples. The high-pressure torsion processing for ten rotations leads to the formation of dense samples with a minor concentration of small crack-like defects in the central region. Apparently, the oxides become refined and are distributed in the matrix predominantly in the form of fine particles. Possibly, there is also some dissolution of surface oxides with the formation of a solid solution of oxygen in the amorphous metallic matrix.

Язык оригиналаанглийский
Номер статьи1900694
ЖурналAdvanced Engineering Materials
DOI
СостояниеОпубликовано - 1 янв 2019

Отпечаток

consolidation
Consolidation
Torsional stress
ribbons
torsion
Oxides
Processing
oxides
matrices
Light transmission
anvils
Optical microscopy
homogeneity
Solid solutions
dissolving
Dissolution
solid solutions
cracks
Oxygen
Transmission electron microscopy

Предметные области Scopus

  • Материаловедение (все)
  • Физика конденсатов

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title = "Consolidation of the Amorphous Zr50Cu50 Ribbons by High-Pressure Torsion",
abstract = "High-pressure torsion is used to consolidate the melt-spun Cu50Zr50 amorphous ribbons. The high-pressure torsion processing is conducted varying the strain using different numbers of anvil rotations. Optical microscopy (OM) and transmission electron microscopy (TEM), X-ray diffraction (XRD) are used to study the effect of processing regimes on consolidation and structural changes. Oxide layers, which are present on the surface of the initial amorphous ribbons, hinder the consolidation of ribbons into fully dense samples. Individual ribbons are clearly observed in the central region of the specimen deformed for one rotation, whereas the edge regions look more consolidated due to the strain gradient along the radius during processing. An increase in strain (by increasing the number of rotations) improves the homogeneity of the consolidated samples. The high-pressure torsion processing for ten rotations leads to the formation of dense samples with a minor concentration of small crack-like defects in the central region. Apparently, the oxides become refined and are distributed in the matrix predominantly in the form of fine particles. Possibly, there is also some dissolution of surface oxides with the formation of a solid solution of oxygen in the amorphous metallic matrix.",
keywords = "consolidation, CuZr, high-pressure torsion, metallic glasses, structures",
author = "Dmitry Gunderov and Evgeniy Boltynjuk and Evgeniy Ubyivovk and Anna Churakova and Askar Kilmametov and Ruslan Valiev",
year = "2019",
month = "1",
day = "1",
doi = "10.1002/adem.201900694",
language = "English",
journal = "Advanced Engineering Materials",
issn = "1438-1656",
publisher = "Wiley-Blackwell",

}

Consolidation of the Amorphous Zr50Cu50 Ribbons by High-Pressure Torsion. / Gunderov, Dmitry; Boltynjuk, Evgeniy; Ubyivovk, Evgeniy; Churakova, Anna; Kilmametov, Askar; Valiev, Ruslan.

В: Advanced Engineering Materials, 01.01.2019.

Результат исследований: Научные публикации в периодических изданияхстатья

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AU - Gunderov, Dmitry

AU - Boltynjuk, Evgeniy

AU - Ubyivovk, Evgeniy

AU - Churakova, Anna

AU - Kilmametov, Askar

AU - Valiev, Ruslan

PY - 2019/1/1

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N2 - High-pressure torsion is used to consolidate the melt-spun Cu50Zr50 amorphous ribbons. The high-pressure torsion processing is conducted varying the strain using different numbers of anvil rotations. Optical microscopy (OM) and transmission electron microscopy (TEM), X-ray diffraction (XRD) are used to study the effect of processing regimes on consolidation and structural changes. Oxide layers, which are present on the surface of the initial amorphous ribbons, hinder the consolidation of ribbons into fully dense samples. Individual ribbons are clearly observed in the central region of the specimen deformed for one rotation, whereas the edge regions look more consolidated due to the strain gradient along the radius during processing. An increase in strain (by increasing the number of rotations) improves the homogeneity of the consolidated samples. The high-pressure torsion processing for ten rotations leads to the formation of dense samples with a minor concentration of small crack-like defects in the central region. Apparently, the oxides become refined and are distributed in the matrix predominantly in the form of fine particles. Possibly, there is also some dissolution of surface oxides with the formation of a solid solution of oxygen in the amorphous metallic matrix.

AB - High-pressure torsion is used to consolidate the melt-spun Cu50Zr50 amorphous ribbons. The high-pressure torsion processing is conducted varying the strain using different numbers of anvil rotations. Optical microscopy (OM) and transmission electron microscopy (TEM), X-ray diffraction (XRD) are used to study the effect of processing regimes on consolidation and structural changes. Oxide layers, which are present on the surface of the initial amorphous ribbons, hinder the consolidation of ribbons into fully dense samples. Individual ribbons are clearly observed in the central region of the specimen deformed for one rotation, whereas the edge regions look more consolidated due to the strain gradient along the radius during processing. An increase in strain (by increasing the number of rotations) improves the homogeneity of the consolidated samples. The high-pressure torsion processing for ten rotations leads to the formation of dense samples with a minor concentration of small crack-like defects in the central region. Apparently, the oxides become refined and are distributed in the matrix predominantly in the form of fine particles. Possibly, there is also some dissolution of surface oxides with the formation of a solid solution of oxygen in the amorphous metallic matrix.

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