Deformation of al85y8ni5co2 metallic glasses under cyclic mechanical load and uniform heating

Arseniy D. Berezner, Victor A. Fedorov, Mikhail Yu Zadorozhnyy, Igor S. Golovin, Dmitri V. Louzguine-Luzgin

Research output: Contribution to journalArticlepeer-review

Abstract

Modelling of the deformation process of Al85Y8Ni5Co2 amorphous alloys was carried out under simultaneous application of cyclic mechanical load (at 0.3 or 3 Hz frequencies) and continuously increasing temperature (heating rate 5 K/min). It is shown that deformation of the amorphous specimens occurs by the hyperbolic temporal dependence. It is analytically determined and experimentally proved that for non-isothermal cyclic deformation, the wave effects take place as a result of the superposition of thermal-activated and mechanical components. The behaviour of the material under thermo-mechanical action was described qualitatively within the framework of Spaepen’s model. The dependencies for the reaction force of the samples were obtained as two-parameter functions of the frequency and temperature. A reaction force surface of a specimen, as a function of the different forcing frequencies and time, has been plotted.

Original languageEnglish
Article number908
JournalMetals
Volume11
Issue number6
DOIs
Publication statusPublished - 2021 Jun

Keywords

  • Inorganic materials
  • Mechanical properties
  • Metallic glasses
  • Thermal expansion

ASJC Scopus subject areas

  • Materials Science(all)
  • Metals and Alloys

Fingerprint

Dive into the research topics of 'Deformation of al<sub>85</sub>y<sub>8</sub>ni<sub>5</sub>co<sub>2</sub> metallic glasses under cyclic mechanical load and uniform heating'. Together they form a unique fingerprint.

Cite this