About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
|
Symposium
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Radiation Effects in Metals and Ceramics
|
Presentation Title |
H-36: Combined Use of In-situ Ion Irradiation and In-situ Nanomechanical Testing for Characterizing Helium Pre-implanted 304 Stainless Steel |
Author(s) |
Ce Zheng, David Frazer, Peter Hosemann, Djamel Kaoumi |
On-Site Speaker (Planned) |
Ce Zheng |
Abstract Scope |
In this study, Helium ions were pre-implanted into pre-FIBed thin pillars of 304 stainless steel in the range of 10<sup>17</sup>-10<sup>18</sup> He/cm<sup>2</sup> using an Orion Nanofab He ion beam microscope. The subsequent irradiation was conducted in-situ in a transmission electron microscope using 1 MeV Kr<sup>2+</sup> ions up to 5 dpa at 300°C. The subsequent mechanical compression testing on the He pre-implanted and ion irradiated pillars was also conducted in-situ in an electron microscope using a PI-95 TEM holder. Snapshots, video and stress-strain curve were recorded for each tested pillar. The in-situ irradiation allowed to follow the bubble formation and growth in the micro-pillars, and the in-situ mechanical testing allowed to evaluate in-situ the radiation hardening due to radiation damage and the impact of the He bubbles. The presentation will showcase the method and the results will discussed. |
Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |