Multiple shear bands in Zr-based bulk metallic glass processed by severe plastic deformation

Evgeniy Boltynjuk, Evgeniy Ubyivovk, Dmitry Gunderov, Vladimir Mikhalovskii, Ruslan Valiev

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

3 Scopus citations

Abstract

The Zr62Cu22Al10Fe5Dy1 bulk metallic glass was subjected to high pressure torsion (HPT) processing at temperatures of 20 and 150°C. Structural studies were carried out by TEM on the lamella-sample prepared from the HPT-specimens in transversal direction to the specimen plane. TEM studies revealed formation of multiple shear bands with spacings in a 20-50 nm range for both HPT states. Shear bands could be divided in two types: primary and secondary bands. The morphology of shear bands strongly depends on the processing temperature. Shear bands are distributed homogeneously throughout the whole lamella-sample for state processed by HPT at temperature of 20°C. Regions with shear bands are divided by amorphous regions on lamella-sample cut from the sample processed by HPT at temperature of 150°C. Analysis of optical microscopy and SEM data showed that shear bands are distributed throughout the whole volume of HPT-specimens.

Original languageEnglish
Title of host publicationMultiple shear bands in Zr-based bulk metallic glass processed by severe plastic deformation
Place of PublicationDefect and Diffusion Forum
PublisherTrans Tech Publications Ltd
Pages319-324
Number of pages6
Volume385 DDF
ISBN (Print)9783035713459
DOIs
StatePublished - 26 Jul 2018
Event13th International Conference on Superplasticity in Advanced Materials, ICSAM 2018 - Petersburg, Russian Federation
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

Keywords

  • Metallic glasses
  • Microstructure
  • Severe plastic deformation
  • Shear bands
  • Transmission electron microscopy

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