| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Structure and Dynamics of Metallic Glasses
|
| Presentation Title |
An Analytical Approach to Understanding Glass-Formation via Different Processing Routes: Casting, Thermoplastic Forming and Additive Manufacturing |
| Author(s) |
Owain Houghton, A. Lindsay Greer, Miguel B. Costa |
| On-Site Speaker (Planned) |
Owain Houghton |
| Abstract Scope |
Developing and optimizing new and existing metallic glasses (MGs) with high glass-forming ability and a broad range of well-targeted properties is critical for their industrial use. To effectively screen for glass-forming compositions using data-driven approaches, a comprehensive understanding expressed in the fewest number of independent parameters is required.
The advent of thermoplastic forming and additive manufacturing, whose thermal profiles are dramatically different from casting, means that a single description of glass-forming ability is not comprehensive.
Inspired by the early works of Uhlmann and Davies, a generalized TTT curve for a glass-forming system is derived. This model is then used to derive and validate a series of merit indices for casting, thermoplastic forming and additive manufacturing. Inspired by Ashby, these merit indices can be used to build an alloy-selection map. The impact of this model on targeted alloy design for MGs and efficient a priori discovery of new compositions is discussed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Modeling and Simulation, Phase Transformations |