| About this Abstract |
| Meeting |
TMS Specialty Congress 2024
|
| Symposium
|
Accelerating Discovery for Mechanical Behavior of Materials 2024
|
| Presentation Title |
Exploiting Metastable Phase Transformations to Achieve Low-cost High Room-temperature Strength Printable Al-alloys |
| Author(s) |
Benjamin M. Glaser, S. Mohadeseh Taheri-Mousavi |
| On-Site Speaker (Planned) |
Benjamin M. Glaser |
| Abstract Scope |
Printable high-temperature aluminum alloys can be used in industries such as automotive, provided that their cost and sustainability metrics match the requirements of large-scale production. These metrics add additional constraints for the design of these alloys beyond printability and typical mechanical performance. We recently explored and experimentally validated a pathway to record high room-temperature strength by exploiting metastable phase development in an Al-Ni-Er-Zr-Y-Yb alloy. To adapt this design for high-demand industries, on data from CALPHAD-based ICME calculations we applied various unsupervised machine learning techniques and Bayesian optimization to efficiently explore high dimensional compositional and decipher influence of elements. We curated a complex objective function targeting high sustainability and low material cost, tailoring phase development to form at an opportune time. We discovered that changing the composition enables cost reductions of 20-30 percent and 10x the nanoprecipitation of metastable phase versus benchmark alloys, leading to 6x increase in room temperature strength. |
| Proceedings Inclusion? |
Definite: Other |