About this Abstract |
Meeting |
TMS Specialty Congress 2024
|
Symposium
|
Accelerating Discovery for Mechanical Behavior of Materials 2024
|
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 by various manufacturing techniques, especially additive
manufacturing. |
Proceedings Inclusion? |
Definite: Other |