About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
|
Symposium
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Radiation Effects in Metals and Ceramics
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Presentation Title |
Influence of Alloying Elements on Microstructure Evolution in 21Cr32Ni Model Alloy Microstructure after In-situ Ion Irradiation |
Author(s) |
Muhammet Ayanoglu, Christopher J Ulmer, Arthur T. Motta |
On-Site Speaker (Planned) |
Muhammet Ayanoglu |
Abstract Scope |
The development of new generation advanced reactors relies on understanding how radiation affects the microstructure of candidate alloys in service. The austenitic alloy 800H (21w/t% Cr and 32w/t% Ni) has been selected as one of the primary candidate alloys for use in advanced nuclear systems due to its high-temperature corrosion and creep resistance. However, its behavior under irradiation needs further investigation to be able to certify its operation in Gen IV reactors.
In this study, the effect of dose and irradiation temperature on microstructure evolution of compositionally simple austenitic 21Cr32Ni model alloy has been investigated in-situ at Intermediate Voltage Electron Microscope (IVEM) at Argonne National Laboratory up to ~2 dpa at irradiation temperatures ranging from -223oC to 440oC. The radiation average diameter, size distribution and density of irradiation-induced dislocation loops, and clusters were experimentally determined as a function of irradiation dose and temperature using transmission electron microscopy, and compared with those obtained in a commercial alloy 800H irradiated under similar conditions. |
Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |