| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Scandium Extraction and Use in Aluminum Alloys
|
| Presentation Title |
Scandium in the Additive Manufacturing of In-Situ TiB2 and TiC Particle Reinforced Aluminum Alloy Composites for Improved Mechanical Properties |
| Author(s) |
Huan Li, Xiaoming Wang, Xinghang Zhang, Tao Wang, Jerome Fourmann, Paul Rometsch |
| On-Site Speaker (Planned) |
Xiaoming Wang |
| Abstract Scope |
Additive manufacturing of aluminum alloy matrix composites containing scandium (Sc) and in-situ TiB2 and TiC particles results in improved mechanical properties. The improvement is attributed to enhanced nucleation of aluminum grains during solidification and the uniform dispersion of the reinforcing particles. Laser powder bed fusion alters the reinforcing particles and promotes the nucleation of aluminum grains in the melt pool under a high cooling rate. Refining the reinforcing particles and aluminum grains leads to the increase of a yield strength (YS) to 425Mpa and an ultimate tensile strength (UTS) to 475Mpa while maintaining an elongation of 16% for Al-Mg reinforced with TiC particles, while to 370 MPa YS, 450 MPa UTS, and an elongation of 7% for an Al-Cu reinforced with TiB2 particles. A good combination of strength and ductility has achieved through laser powder bed fusion. |
| Proceedings Inclusion? |
Planned: Light Metals |
| Keywords |
Additive Manufacturing, Aluminum, Composites |