Avalanches in CuZrAl metallic glasses
Fuente:
arXiv
Gespeichert in:
| Hauptverfasser: | , , , |
|---|---|
| Format: | Preprint |
| Veröffentlicht: |
2024
|
| Schlagworte: | |
| Online-Zugang: | |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| _version_ | 1866909323038294016 |
|---|---|
| author | Mäkinen, Tero Parmar, Anshul D. S. Bonfanti, Silvia Alava, Mikko J. |
| author_facet | Mäkinen, Tero Parmar, Anshul D. S. Bonfanti, Silvia Alava, Mikko J. |
| contents | Metallic glasses have mechanical properties, which exhibit avalanches in the disguise of stress drops. We study these phenomena in a classical metallic glass system CuZrAl by athermal quasistatic shear and varying the element concentrations and for pure CuZr 50/50 case the cooling rate. The resulting mechanical properties are close to the behaviour 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 behaviour is found only approaching the yield point. The post-yield stress drops are universal, and the gap distribution becomes flat. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_15058 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Avalanches in CuZrAl metallic glasses Mäkinen, Tero Parmar, Anshul D. S. Bonfanti, Silvia Alava, Mikko J. Statistical Mechanics Materials Science Metallic glasses have mechanical properties, which exhibit avalanches in the disguise of stress drops. We study these phenomena in a classical metallic glass system CuZrAl by athermal quasistatic shear and varying the element concentrations and for pure CuZr 50/50 case the cooling rate. The resulting mechanical properties are close to the behaviour 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 behaviour is found only approaching the yield point. The post-yield stress drops are universal, and the gap distribution becomes flat. |
| title | Avalanches in CuZrAl metallic glasses |
| topic | Statistical Mechanics Materials Science |
| url | https://arxiv.org/abs/2409.15058 |