About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
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Additive Manufacturing: Materials Design and Alloy Development VI – Closed-Loop Alloy Design
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Presentation Title |
Tailoring Metastability Due to Rapid Solidification to Achieve High-strength Printable Al Alloys |
Author(s) |
S. Mohadeseh Taheri-Mousavi |
On-Site Speaker (Planned) |
S. Mohadeseh Taheri-Mousavi |
Abstract Scope |
Printable aluminum alloys with high strength are a highly demanding class of alloys that are used, eg, in the body of airplanes and cars. However, there are few high-strength alloys that are printable. We exploited metastable phases due to the rapid solidification of powder bed fusion and transformed the length scale of our strengthening L12 phases from micro to nanoscale. The strength has an inverse relationship with this length scale. We combined integrated computational materials engineering and advanced machine learning methods and designed a composition for our target nanoscale L12 phases that have extremely low coarsening rates and all are initially precipitated as metastable phases. The hardness of the as-built samples is comparable to wrought Al7075. We also performed tensile tests and our alloy showed 410 MPa strength. The combined numerical and experimental techniques provide an efficient pathway for transformative future alloy design through various manufacturing techniques, especially additive manufacturing. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Aluminum, ICME |