| About this Abstract |
| Meeting |
MS&T23: Materials Science & Technology
|
| Symposium
|
Additive Manufacturing of Metals: Microstructure, Properties and Alloy Development
|
| Presentation Title |
Novel, Elevated Temperature Al-Ce-Mo Alloy Designed for Additive Manufacturing |
| Author(s) |
Kevin Graydon, Thinh Huynh, David Hicks, Yongho Sohn |
| On-Site Speaker (Planned) |
Kevin Graydon |
| Abstract Scope |
The unique processing conditions of laser powder bed fusion can pose a challenge for engineering alloys developed for wrought or cast parts. These challenges have been mitigated by compositional modifications to include elements such as Sc and Zr. However, there is still a need for designing alloy compositions specifically for additive manufacturing (AM). In this study, a novel Al-Ce-Mo ternary system was developed with elevated temperature and strength retention in mind. Compositions were selected using kinetic considerations and CALPHAD/ICME methods, and the system was investigated through in-house gas atomization of powders, printing by laser powder bed fusion, and subsequent tensile testing and material characterization. Machine learning was used to predict the optimal printability window. Trends in mechanical behavior and microstructural evolutions were analyzed as functions of temperature and Mo content. This work demonstrates the potential of designed-for-AM alloys, unlocking improved performance and greater manufacturing possibilities. |