Identifying the high entropy characteristic in La-based metallic glasses

Langting Zhang, Yajuan Duan, Daniel Crespo, Eloi Pineda, Takeshi Wada, Hidemi Kato, Jean Marc Pelletier, Jichao Qiao

Research output: Contribution to journalArticlepeer-review

Abstract

High temperature deformation was probed in a La-based high entropy metallic glass with an evident slow β relaxation. The correlation between high configurational entropy and high temperature deformation mechanism was analyzed. On the one hand, by increasing the strain rate, the degree of deviation from Newtonian behavior in high entropy metallic glasses is lower than that of conventional metallic glasses, which is ascribed to the high configurational entropy. On the other hand, high configurational entropy leads to a decrease in activation volume in high temperature deformation of metallic glasses. Identifying the influence of high configurational entropy on the deformation mechanism paves the way for further understanding of the mechanical behavior of metallic glasses.

Original languageEnglish
Article number051905
JournalApplied Physics Letters
Volume119
Issue number5
DOIs
Publication statusPublished - 2021 Aug 2

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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