Avalanches in Cu-Zr-Al metallic glasses

Tero Mäkinen*, Anshul D.S. Parmar*, Silvia Bonfanti, Mikko J. Alava

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

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Abstract

Metallic glasses have mechanical properties, which exhibit avalanches in the disguise of stress drops. We study these phenomena in a classical metallic glass system Cu-Zr-Al by athermal quasistatic shear and varying the element concentrations and for pure Cu-Zr 50/50 case the cooling rate. The resulting mechanical properties are close to the behavior found experimentally. At small strains, the pristine systems are akin to other glassy systems with a so-called gap distribution with a small positive exponent. Critical avalanching behavior is found only approaching the yield point. The post-yield stress drops are universal, and the gap distribution becomes flat.

Original languageEnglish
Article number014107
Pages (from-to)1-9
Number of pages9
JournalPhysical Review E
Volume111
Issue number1
DOIs
Publication statusPublished - 3 Jan 2025
MoE publication typeA1 Journal article-refereed

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    01/07/202431/12/2025

    Project: Business Finland: New business from research ideas (TUTLI)

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    01/01/202330/06/2024

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    01/01/202130/06/2022

    Project: Business Finland: New business from research ideas (TUTLI)

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