About this Abstract |
Meeting |
2021 TMS Annual Meeting & Exhibition
|
Symposium
|
Accelerated Discovery and Qualification of Nuclear Materials for Energy Applications
|
Presentation Title |
Synergistic Irradiation and Ageing Effect on Microstructure and Mechanical Properties of Grade 92 at ~700C |
Author(s) |
Weicheng Zhong, Lizhen Tan |
On-Site Speaker (Planned) |
Weicheng Zhong |
Abstract Scope |
Advanced nuclear reactors are designed to operate at higher temperatures for greater thermal efficiency, which result in the evaluation necessity of nuclear materials at higher temperatures. Current knowledge on high Cr ferritic martensitic (FM) steels are limited at 300-600℃. To understand the applicability of FM steels in higher temperature reactor designs, Grade 92 steel samples were irradiated in the High Flux Isotope Reactor at ~700℃ up to 14.6 dpa. The goal of this work is to evaluate the response of Grade 92 at such a high temperature irradiation environment. Microstructural and tensile performance were evaluated on the neutron-irradiated Grade 92 and compared with the counterparts thermally aged for a comparable time. Microstructure evolution, including grain structure, precipitates, dislocation, and cavities, were correlated with the mechanical response. The systematic study on the irradiated and aged samples revealed the synergistic effects of irradiation and thermal ageing on Grade 92 at 700℃. |
Proceedings Inclusion? |
Planned: |