About this Abstract |
Meeting |
2021 TMS Annual Meeting & Exhibition
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Symposium
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Mechanical Response of Materials Investigated through Novel In-situ Experiments and Modeling
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Presentation Title |
In-situ Micro-tensile Testing of Proton-irradiated HT-9 Steels |
Author(s) |
Tanvi Ajantiwalay, Stuart Maloy, Khalid Hattar, Assel Aitkaliyeva |
On-Site Speaker (Planned) |
Tanvi Ajantiwalay |
Abstract Scope |
One of the major issues with ferritic/martensitic steels (such as HT-9) is low-temperature ductility. During the early stages of irradiation (at low doses), the majority of defect evolution occurs. The changes in mechanical properties at this stage, however, have not been explored yet. In this study, the tensile properties of proton-irradiated HT-9 at low doses and room temperature are analyzed at a micron-scale. Micro-scale tensile tests enable observation of deformation behavior and site-specific testing. The extent of irradiation hardening with an increasing level of dose is further investigated. The results show an increase in yield stress with irradiation to a fluence of 1.24×1014 cm-2 followed by a slight decline at 1.24×1016 cm-2. The fracture surfaces for all the deformed specimens are then visualized with the help of live testing videos and scanning electron microscopy. |
Proceedings Inclusion? |
Planned: |
Keywords |
Mechanical Properties, Characterization, Nuclear Materials |