| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Refractory Metals 2023
|
| Presentation Title |
ULTIMATE: Alloy Designs for High Temperature Mo-Si-B Base Systems |
| Author(s) |
John H. Perepezko, Dan J Thoma, Longfei Liu, Phalgun Nelaturu, Ankur Agrawal, Zahabul Islam, Fan Zhang, Laurence Marks |
| On-Site Speaker (Planned) |
John H. Perepezko |
| Abstract Scope |
Among the refractory metal alloys (RMA) Mo-Si-B alloys have received much attention due to their high melting point and high temperature strength, but they also have some remaining challenges to improve ductility, lower density and enhance environmental resistance. In order address this issue, a new series of Mo-Si-B alloys in the Moss+T2 +Mo2B three phase region has been designed. Selected additions of Al and Ti enable a density reduction to below 9 gm/cm3. The processing of RMAs to manufacture dimensionally controlled shapes in a commercially cost-effective way is challenging. To circumvent this challenge, an additive manufacturing (AM) route offers a new, rapid and effective strategy. With AM methods alloying is accomplished by the melting and reactive synthesis of component powder mixtures to full density. This approach has been demonstrated to yield the fabrication of homogeneous alloys with well-defined shapes, full density and with the desired microstructures and structural performance. |
| Proceedings Inclusion? |
Undecided |
| Keywords |
Additive Manufacturing, High-Temperature Materials, |