| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Structure-Property Relationships of Bulk Metallic Glasses
|
| Presentation Title |
The Mechanical Heterogeneity of Metallic Glasses |
| Author(s) |
Miguel B. Costa, A. Lindsay Greer |
| On-Site Speaker (Planned) |
Miguel B. Costa |
| Abstract Scope |
Metallic glasses (MGs) are often described as macroscopically uniform; yet they are structurally heterogeneous, being composed of a spectrum of atomic-packing motifs. This structural heterogeneity is manifested at nearly all length scales and in various characterization techniques (e.g. indentation, local elastic probing, mechanical testing). Surprisingly, the glass is heterogeneous at length scales many orders of magnitude larger than those associated with atomic-structure features or typical deformation mechanisms, such as shear transformation zones and shear bands. Heterogeneities play important roles in rejuvenation treatments and the mechanical properties of these materials, highlighting the importance of exploring these features for future engineering applications. In this work, we probe the mechanical heterogeneity and the different states of MGs by a variety of indentation techniques and calorimetry. Our results reveal important correlations between structural features, heterogeneities, and the overall mechanical performance of metallic glasses. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Mechanical Properties, Other |