تقرير
Unveiling the Asymmetry in Density within the Shear Bands of Metallic Glasses
| العنوان: | Unveiling the Asymmetry in Density within the Shear Bands of Metallic Glasses |
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| المؤلفون: | Rösner, Harald, Bera, Arabinda, Zaccone, Alessio |
| المصدر: | Physical Review B 110, 014107 (2024) |
| سنة النشر: | 2024 |
| المجموعة: | Condensed Matter Physics (Other) |
| مصطلحات موضوعية: | Condensed Matter - Disordered Systems and Neural Networks, Condensed Matter - Materials Science, Condensed Matter - Soft Condensed Matter, Physics - Classical Physics |
| الوصف: | Plastic deformation in metallic glasses at room temperature leads to the development of shear bands due to shear localization. In many experiments, shear bands have shown local density variations along their path, with a distinct imbalance in magnitude between local densification and dilation. However, a comprehensive mechanistic understanding or theory to explain this asymmetry has been lacking until now. Here, we introduce a new model that consists of a sequential arrangement of alternating topological 'charges', generating a dipolar field. The resulting microscopic displacement field, when integrated into the deformation gradient tensor, provides an accurate analytical solution for the observed imbalances in the density variations. The implications of this method are discussed, highlighting the potential to elucidate a broader range of observations in shear bands. Comment: Accepted for publication in Phys. Rev. B |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevB.110.014107 |
| URL الوصول: | http://arxiv.org/abs/2407.07733 |
| رقم الأكسشن: | edsarx.2407.07733 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevB.110.014107 |
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