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Effect of stress concentration on plastic deformation of Zr41.2Ti13.8Cu12.5Ni10Be22.5 bulk metallic glass under compressive loading
IFW Dresden, Inst Complex Mat, Solidificat Proc & Complex Struct, Helmholtzstr 20, D-01069 Dresden, Germany..
Dalarna University, School of Technology and Business Studies, Materials Technology.ORCID iD: 0000-0001-7938-9909
Shanghai Univ, Lab Microstruct, Shanghai 200444, Peoples R China..
Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China.;Xi An Jiao Tong Univ, Sch Mat Sci & Engn, Xian 710049, Peoples R China..
2016 (English)In: Materials letters (General ed.), ISSN 0167-577X, E-ISSN 1873-4979, Vol. 179, 202-205 p.Article in journal (Refereed) Published
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Text
Abstract [en]

The influence of different sources of stress concentration on the plastic deformation of the Zr41.2Ti13.8Cu12.5Ni10Be22.5 metallic glass during room temperature compression tests is evaluated. Stress concentration introduced by sample geometry has a significant effect on the mechanical properties: in contrast to the specimen with square cross-section, which shows negligible plastic deformation, a substantial improvement in the plasticity can be achieved for the sample with round cross-section. Simulations of the stress distribution during the compression tests reveal that the stress concentration at the interface corners is responsible for the early fracture of the sample with square cross-section. Additionally, stress concentration during compression tests in the samples with square cross-section can be significantly reduced, and plastic deformation can be enhanced, by removing the interface corners as well as by reducing the friction arising between loading platens and specimen. 

Place, publisher, year, edition, pages
2016. Vol. 179, 202-205 p.
Keyword [en]
Bulk metallic glasses (BMG), Mechanical properties, Plasticity
National Category
Materials Engineering
Research subject
Steel Forming and Surface Engineering
Identifiers
URN: urn:nbn:se:du-22413DOI: 10.1016/j.matlet.2016.05.070ISI: 000376991800050OAI: oai:DiVA.org:du-22413DiVA: diva2:942259
Available from: 2016-06-23 Created: 2016-06-23 Last updated: 2016-10-25Bibliographically approved

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Surreddi, Kumar Babu
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CiteExportLink to record
Permanent link

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Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • chicago-author-date
  • chicago-note-bibliography
  • Other style
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Language
  • de-DE
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  • nn-NB
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