About this Abstract |
Meeting |
TMS Specialty Congress 2024
|
Symposium
|
2nd World Congress on Artificial Intelligence in Materials & Manufacturing (AIM 2024)
|
Presentation Title |
Inverse Design of High-temperature Al-alloys Using Hybrid CALPHAD-based ICME Techniques |
Author(s) |
Benjamin M. Glaser, S. Mohadeseh Taheri-Mousavi |
On-Site Speaker (Planned) |
Benjamin M. Glaser |
Abstract Scope |
High temperature strengthening Al-alloys are in high demand for automotive and aerospace industries due to their high strength, lightweight, machinability, and low cost. We discovered a pathway to strengthening by enabling significant length scale reduction of L12 particles by activating metastable phases due to rapid solidification and their transformation after aging. Precipitates formed in this way develop at a nanometer length scale, significantly enhancing strength. The performance of this record high-temperature strength printable Al alloy from the Al-Ni-Er-Zr-Y-Yb system was validated in experiments. To further enhance this, on data from CALPHAD-based ICME calculations, we applied various unsupervised machine learning techniques and Bayesian optimization to efficiently explore high dimensional compositional space and optimized the complex objective functions. We discovered that changing the composition enables a 6x increase in volume fraction of strengthening precipitates versus benchmark designs, while retaining the nanometer length scale achieved by activating the metastable phase. |
Proceedings Inclusion? |
Definite: Other |