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Condensed Matter > Disordered Systems and Neural Networks

arXiv:2504.01229 (cond-mat)
[Submitted on 1 Apr 2025]

Title:Computational Study of Density Fluctuation-Induced Shear Bands Formation in Bulk Metallic Glasses

Authors:Siya Zhu, Hagen Eckert, Stefano Curtarolo, Jan Schroers, Axel van de Walle
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Abstract:Seemingly identical Bulk Metallic Glasses (BMG) often exhibit strikingly different mechanical properties despite having the same composition and fictive temperature. A postulated mechanism underlying these differences is the presence of "defects". Here we investigate this hypothesis through the study of the effect of density fluctuations on shear band formation under an applied stress. We find that the critical shear stress is strongly dependent on the magnitude and size of the fluctuations. This finding also elucidates why, historically, critical shear stresses obtained in simulations have differed so much from those found experimentally, as typical simulations setups might favor unrealistically uniform geometries.
Subjects: Disordered Systems and Neural Networks (cond-mat.dis-nn); Materials Science (cond-mat.mtrl-sci)
Cite as: arXiv:2504.01229 [cond-mat.dis-nn]
  (or arXiv:2504.01229v1 [cond-mat.dis-nn] for this version)
  https://doi.org/10.48550/arXiv.2504.01229

Submission history

From: Siya Zhu [view email]
[v1] Tue, 1 Apr 2025 22:36:18 UTC (1,793 KB)
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