About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
|
Symposium
|
Bulk Metallic Glasses XVII
|
Presentation Title |
Synthesis and Properties of BMG Type Nanoglasses by Thin Film Vapour Deposition |
Author(s) |
Hans J. Fecht |
On-Site Speaker (Planned) |
Hans J. Fecht |
Abstract Scope |
Nanoglasses can be considered as non-crystalline solids which exhibit a glass-like atomic structure and contain a considerable number of internal interfaces. This metastable state of matter can be synthesized by thin film deposition from a BMG-type target among a variety of mother methods. Remarkably, all of these BMG based nanoglass specimen clearly exhibit an anomaly of the specific heat typical for the glassy state. Using a fully amorphous sputtering target of VIT105 and Au-based BMG the resulting nanostructures can be varied from monolithic amorphous to nanoglass and to columnar amorphous nanostructures at varying Argon base pressure. While in general glassy structures lack ductility, the nanoglass state exhibits superior mechanical properties achieving a remarkable level of plastic deformation in bending experiments. Further details, also in relation to a recent theoretical approach, will be discussed. |
Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |