Atomic force microscopy studies of severely deformed amorphous TiNiCu alloy

Dmitry Gunderov, Evgeniy Boltynjuk, Evgeniy Ubyivovk, Alexander Lukyanov, Anna Churakova, Yuri Zamula, Eduard Batyrshin, Askar Kilmametov, Ruslan Valiev

Research output

Abstract

The amorphous Ti50Ni25Cu25 alloy was subjected to high pressure torsion (HPT) processing. TEM studies revealed in the structure of the HPT-processed samples the presence of nanocrystals with a size of about 5 nm and amorphous clusters with a size of about 10-30 nm. Atomic force microscopy (AFM) was used to study the surface morphology of foils prepared by ion polishing from the initial amorphous ribbons and HPT-processed samples. AFM images of the foil prepared from the initial ribbon revealed a smooth surface with an average roughness of 0.3 nm. A totally different surface morphology was observed for the foil prepared from the HPT-processed state by the same regime of ion polishing: the presence of holes with a depth of 2-4 nm and a width of 10-30 nm. The changes in the surface morphology, namely the holes-like surface morphology of the HPT-processed state, could be explained by a complex transformation of the amorphous structure, and probably by the variation and redistribution of free volume, which leads to the emergence of a cluster contrast in TEM images.

Original languageEnglish
Title of host publicationAtomic force microscopy studies of severely deformed amorphous TiNiCu alloy
Place of PublicationDefect and Diffusion Forum
PublisherTrans Tech Publications Ltd
Pages200-205
Number of pages6
Volume385 DDF
ISBN (Print)9783035713459
DOIs
Publication statusPublished - 26 Jul 2018
Event13th International Conference on Superplasticity in Advanced Materials (ICSAM 2018) - Petersburg
Duration: 19 Aug 201822 Aug 2018
http://icsam.bsu.edu.ru/icsam/committees/

Conference

Conference13th International Conference on Superplasticity in Advanced Materials, ICSAM 2018
Abbreviated title(ICSAM 2018)
CountryRussian Federation
CityPetersburg
Period19/08/1822/08/18
Internet address

Fingerprint

Amorphous alloys
Torsional stress
torsion
Atomic force microscopy
atomic force microscopy
Surface morphology
Metal foil
foils
Polishing
polishing
ribbons
Ions
Transmission electron microscopy
transmission electron microscopy
Free volume
Nanocrystals
nanocrystals
ions
roughness
Surface roughness

Scopus subject areas

  • Condensed Matter Physics
  • Materials Science(all)
  • Radiation

Cite this

Gunderov, D., Boltynjuk, E., Ubyivovk, E., Lukyanov, A., Churakova, A., Zamula, Y., ... Valiev, R. (2018). Atomic force microscopy studies of severely deformed amorphous TiNiCu alloy. In Atomic force microscopy studies of severely deformed amorphous TiNiCu alloy (Vol. 385 DDF, pp. 200-205). Defect and Diffusion Forum: Trans Tech Publications Ltd. https://doi.org/10.4028/www.scientific.net/DDF.385.200
Gunderov, Dmitry ; Boltynjuk, Evgeniy ; Ubyivovk, Evgeniy ; Lukyanov, Alexander ; Churakova, Anna ; Zamula, Yuri ; Batyrshin, Eduard ; Kilmametov, Askar ; Valiev, Ruslan. / Atomic force microscopy studies of severely deformed amorphous TiNiCu alloy. Atomic force microscopy studies of severely deformed amorphous TiNiCu alloy. Vol. 385 DDF Defect and Diffusion Forum : Trans Tech Publications Ltd, 2018. pp. 200-205
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Gunderov, D, Boltynjuk, E, Ubyivovk, E, Lukyanov, A, Churakova, A, Zamula, Y, Batyrshin, E, Kilmametov, A & Valiev, R 2018, Atomic force microscopy studies of severely deformed amorphous TiNiCu alloy. in Atomic force microscopy studies of severely deformed amorphous TiNiCu alloy. vol. 385 DDF, Trans Tech Publications Ltd, Defect and Diffusion Forum, pp. 200-205, Petersburg, 19/08/18. https://doi.org/10.4028/www.scientific.net/DDF.385.200

Atomic force microscopy studies of severely deformed amorphous TiNiCu alloy. / Gunderov, Dmitry; Boltynjuk, Evgeniy; Ubyivovk, Evgeniy; Lukyanov, Alexander; Churakova, Anna; Zamula, Yuri; Batyrshin, Eduard; Kilmametov, Askar; Valiev, Ruslan.

Atomic force microscopy studies of severely deformed amorphous TiNiCu alloy. Vol. 385 DDF Defect and Diffusion Forum : Trans Tech Publications Ltd, 2018. p. 200-205.

Research output

TY - GEN

T1 - Atomic force microscopy studies of severely deformed amorphous TiNiCu alloy

AU - Gunderov, Dmitry

AU - Boltynjuk, Evgeniy

AU - Ubyivovk, Evgeniy

AU - Lukyanov, Alexander

AU - Churakova, Anna

AU - Zamula, Yuri

AU - Batyrshin, Eduard

AU - Kilmametov, Askar

AU - Valiev, Ruslan

N1 - Категории Scopus: Condensed Matter Physics, Materials Science (miscellaneous), Radiation

PY - 2018/7/26

Y1 - 2018/7/26

N2 - The amorphous Ti50Ni25Cu25 alloy was subjected to high pressure torsion (HPT) processing. TEM studies revealed in the structure of the HPT-processed samples the presence of nanocrystals with a size of about 5 nm and amorphous clusters with a size of about 10-30 nm. Atomic force microscopy (AFM) was used to study the surface morphology of foils prepared by ion polishing from the initial amorphous ribbons and HPT-processed samples. AFM images of the foil prepared from the initial ribbon revealed a smooth surface with an average roughness of 0.3 nm. A totally different surface morphology was observed for the foil prepared from the HPT-processed state by the same regime of ion polishing: the presence of holes with a depth of 2-4 nm and a width of 10-30 nm. The changes in the surface morphology, namely the holes-like surface morphology of the HPT-processed state, could be explained by a complex transformation of the amorphous structure, and probably by the variation and redistribution of free volume, which leads to the emergence of a cluster contrast in TEM images.

AB - The amorphous Ti50Ni25Cu25 alloy was subjected to high pressure torsion (HPT) processing. TEM studies revealed in the structure of the HPT-processed samples the presence of nanocrystals with a size of about 5 nm and amorphous clusters with a size of about 10-30 nm. Atomic force microscopy (AFM) was used to study the surface morphology of foils prepared by ion polishing from the initial amorphous ribbons and HPT-processed samples. AFM images of the foil prepared from the initial ribbon revealed a smooth surface with an average roughness of 0.3 nm. A totally different surface morphology was observed for the foil prepared from the HPT-processed state by the same regime of ion polishing: the presence of holes with a depth of 2-4 nm and a width of 10-30 nm. The changes in the surface morphology, namely the holes-like surface morphology of the HPT-processed state, could be explained by a complex transformation of the amorphous structure, and probably by the variation and redistribution of free volume, which leads to the emergence of a cluster contrast in TEM images.

KW - Amorphous alloys

KW - severe plastic deformation

KW - transmission electron microscopy

KW - atomic force microscopy

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M3 - Conference contribution

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SN - 9783035713459

VL - 385 DDF

SP - 200

EP - 205

BT - Atomic force microscopy studies of severely deformed amorphous TiNiCu alloy

PB - Trans Tech Publications Ltd

CY - Defect and Diffusion Forum

ER -

Gunderov D, Boltynjuk E, Ubyivovk E, Lukyanov A, Churakova A, Zamula Y et al. Atomic force microscopy studies of severely deformed amorphous TiNiCu alloy. In Atomic force microscopy studies of severely deformed amorphous TiNiCu alloy. Vol. 385 DDF. Defect and Diffusion Forum: Trans Tech Publications Ltd. 2018. p. 200-205 https://doi.org/10.4028/www.scientific.net/DDF.385.200