About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
|
Symposium
|
Bulk Metallic Glasses XVII
|
Presentation Title |
Toward Tunable Superelastic Bulk Metallic Glass Composite |
Author(s) |
Wook Ha Ryu, Hyun Seok Oh, Ji Young Kim, Eun Soo Park |
On-Site Speaker (Planned) |
Eun Soo Park |
Abstract Scope |
The design of modern high-performance structural engineering materials is driven by optimizing combinations of mechanical properties for predictable failure in service. Although many bulk metallic glasses (BMGs) exhibit high strength and substantial fracture toughness, they lack ductility and fail in an apparently brittle manner in unconstrained loading geometries. To solve this problem, various concepts of developing composite microstructure with in-situ/ex-situ formed secondary precipitates have been actively studied. The selection of secondary phase is a key parameter in designing BMG matrix composites to overcome the brittleness and improve their mechanical properties. In the present study, we report BMG matrix composites with “superelastic” secondary phase. We will carefully discuss how to optimize their mechanical properties by controlling the morphology and fraction of the secondary precipitates and phase transformation behavior during deformation, which can significantly enhance their sustainability. This report will provide a novel strategy of composite design via manipulating self-healable secondary phase. |
Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |