About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Developments in Advanced Nuclear Structural Materials
|
| Presentation Title |
Low Dose Irradiation Response of Laser Additively Manufactured HT9 Ferritic Martensitic Steels |
| Author(s) |
Madhavan Radhakrishnan, Mohin Sharma, Mrithunjaya Parashar, Bibhudutta Rout, Narendra B Dahotre |
| On-Site Speaker (Planned) |
Madhavan Radhakrishnan |
| Abstract Scope |
Ferritic martensitic (F/M) steels with 9-12 wt.% Cr are promising materials for advanced generation nuclear reactor applications. In this work, HT9 F/M steels having 12 wt.% Cr were fabricated using laser powder bed fusion and laser directed energy deposition techniques. The deposited alloys are exposed to a uniform irradiation dose of up to 1 dpa with 1 MeV proton beam at room temperature. Extensive characterization of irradiated microstructures are carried out using transmission electron microscopy to deduce the evolution of localized dislocation substructure in the martensite and retained austenite phases. The irradiation induced microstructures are compared with the austenitized and tempered HT9 steel which is completely martensite. The talk would present the insights into the correlation between microstructure dependent irradiation response and the associated irradiation hardening behavior. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Nuclear Materials, Environmental Effects |