1 Citation (Scopus)

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.

Translated title of the contributionИсследование методом атомной силовой микроскопии аморфного сплава TiNiCu, подвергнутого интенсивной пластической деформации
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

Scopus subject areas

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

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