About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
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Symposium
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Accelerated Qualification of Nuclear Materials Integrating Experiments, Modeling, and Theories
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Presentation Title |
Ion Irradiation and Examination of Additive Friction Stir Manufactured 316 Stainless Steel Component |
Author(s) |
Priyanka Agrawal, Ching-Heng Shiau, Aishani Sharma, Zhihan Hu, Megha Dubey, Yu Lu, Lin Shao, Ramprashad Prabhakaran, Yaqiao Wu, Rajiv S. Mishra |
On-Site Speaker (Planned) |
Priyanka Agrawal |
Abstract Scope |
This work explored solid-state additive friction stir deposition (AFSD) as a modular manufacturing technology enabling a more rapid and streamlined on-site fabrication process for large-meter scale nuclear structural components with fully dense parts. Austenitic 316 stainless steel (SS) is an excellent candidate to demonstrate AFSD, as it is a commonly used structural material for nuclear applications. The microstructural evolution and the concomitant changes in mechanical properties after 5 MeV Fe++ ion irradiation were comprehensively studied via transmission electron microscopy and nanoindentation. AFSD-processed 316 SS led to a fine-grained and ultrafine-grained microstructure resulting in a simultaneous increase in strength, ductility, toughness, irradiation resistance, and corrosion resistance. The AFSD samples did not exhibit voids even at 100 dpa dose at 600 °C. The enhanced radiation tolerance as compared to conventional SS was reasoned to the high density of grain boundaries that act as irradiation-induced defect sinks. |
Proceedings Inclusion? |
Planned: |
Keywords |
Nuclear Materials, Additive Manufacturing, Mechanical Properties |