| About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
Additive Manufacturing: Microstructure, Defects, and Properties
|
| Presentation Title |
Phase Stability of Additively Manufactured Multi-Principal Element Alloys in Irradiation Environments |
| Author(s) |
Haiming Wen, Matthew Luebbe |
| On-Site Speaker (Planned) |
Haiming Wen |
| Abstract Scope |
Multi-principal entropy alloys (MPEAs) are a new class of alloys with great potential for extreme environment applications (for example, nuclear applications) owing to their improved phase stability and enhanced resistance to environmental degradation. However, in addition to the composition effect, microstructure also significantly affects the behavior of MPEAs in extreme environments, for example, grain size and secondary phases or precipitates. The specific microstructure obtained in MPEAs is heavily dependent on the manufacturing technique employed. In this study, solid-solution or precipitation-strengthened MPEAs with different compositions and microstructures were fabricated by conventional manufacturing (casting followed by rolling and heat treatment) or advanced manufacturing techniques (including additive manufacturing, powder metallurgy route involving rapid sintering, and severe plastic deformation). The irradiation behavior of the manufactured MPEAs were carefully studied using ex-situ and in-situ ion irradiation. Results provide insights to optimize the design and manufacturing of MPEAs to achieve superior phase stability in extreme environments. |