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Stress breaks universal aging behavior in a metallic glass

Author

Listed:
  • Amlan Das

    (University of Illinois at Urbana-Champaign)

  • Peter M. Derlet

    (Paul Scherrer Institute)

  • Chaoyang Liu

    (University of Illinois at Urbana-Champaign)

  • Eric M. Dufresne

    (Argonne National Laboratory)

  • Robert Maaß

    (University of Illinois at Urbana-Champaign)

Abstract

Numerous disordered materials display a monotonous slowing down in their internal dynamics with age. In the case of metallic glasses, this general behavior across different temperatures and alloys has been used to establish an empirical universal superposition principle of time, waiting time, and temperature. Here we demonstrate that the application of a mechanical stress within the elastic regime breaks this universality. Using in-situ x-ray photon correlation spectroscopy (XPCS) experiments, we show that strong fluctuations between slow and fast structural dynamics exist, and that these generally exhibit larger relaxation times than in the unstressed case. On average, relaxation times increase with stress magnitude, and even preloading times of several days do not exhaust the structural dynamics under load. A model Lennard-Jones glass under shear deformation replicates many of the features revealed with XPCS, indicating that local and heterogeneous microplastic events can cause the strongly non-monotonous spectrum of relaxation times.

Suggested Citation

  • Amlan Das & Peter M. Derlet & Chaoyang Liu & Eric M. Dufresne & Robert Maaß, 2019. "Stress breaks universal aging behavior in a metallic glass," Nature Communications, Nature, vol. 10(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-12892-1
    DOI: 10.1038/s41467-019-12892-1
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    Cited by:

    1. Birte Riechers & Amlan Das & Eric Dufresne & Peter M. Derlet & Robert Maaß, 2024. "Intermittent cluster dynamics and temporal fractional diffusion in a bulk metallic glass," Nature Communications, Nature, vol. 15(1), pages 1-9, December.
    2. Nimmi Das Anthuparambil & Anita Girelli & Sonja Timmermann & Marvin Kowalski & Mohammad Sayed Akhundzadeh & Sebastian Retzbach & Maximilian D. Senft & Michelle Dargasz & Dennis Gutmüller & Anusha Hire, 2023. "Exploring non-equilibrium processes and spatio-temporal scaling laws in heated egg yolk using coherent X-rays," Nature Communications, Nature, vol. 14(1), pages 1-12, December.

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