Mechanical response of Zr-based metallic glass

A. V. Sergueeva, N. Mara, A. K. Mukherjee

Research output: Contribution to journalConference articlepeer-review

20 Scopus citations

Abstract

The new family of Zr-based multicomponent metallic glasses shows a beneficial combination of yield strength value as high as 2 GPa and microplasticity of up to 1% at room temperature and excellent glass-forming ability in a wide supercooled liquid region. Partial devitrification of glassy alloys upon heating or hot working above the glass transition temperature can lead to formation of nanocrystalline precipitates in the glassy matrix. In this case, the mechanical properties depend on the amount of crystalline precipitates. The nature of the brittle crystalline intermetallic phases is likely to dominate the mechanical behavior, leading to the observed decrease in ductility for the annealed samples since the deformation is no longer governed by the deformation mechanism of the amorphous phase. A fully crystallized alloy upon heating has revealed increasing ductility with temperature, exhibiting superplastic-like deformation with high elongation.

Original languageEnglish (US)
Pages (from-to)169-175
Number of pages7
JournalJournal of Non-Crystalline Solids
Volume317
Issue number1-2
DOIs
StatePublished - Mar 1 2003
EventAdvances in Metallic Glasses - Seattle, WA, United States
Duration: Feb 17 2002Feb 21 2002

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