|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Bulk Metallic Glasses XIX
||Strength, Ductility and Elasticity of Metallic Glass Nanoparticles and Bulk Nano-glasses
||Wendy Gu, Melody Wang, Mehrdad Kiani, Abhinav Parakh, Anabelle Colmenares
|On-Site Speaker (Planned)
Colloidal synthesis is a solution-based pathway for fabricating metal-metalloid metallic glass nanoparticles, which can then be consolidated into nanostructured, bulk metallic glasses. The particles form through a cluster-mediated growth process which results in heterogeneous density. Here, we compare the mechanical behavior of iron-boron and nickel-boron particles tested using in-situ SEM and TEM mechanical testing. The high ductility of these particles is related to their size and atomistic structure. High pressure diamond anvil cell and synchrotron X-ray measurements are used to determine bulk modulus and compressibility under hydrostatic pressure. Nanostructured, bulk metallic glasses are formed from the iron-boride particles. These nano-glasses consist of amorphous grains connected by amorphous regions of lower density. The role of the amorphous interfaces is revealed through nanoindentation and micropillar compressions.
||Mechanical Properties, Nanotechnology, Characterization