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 |
Effects of Radiation Parameters on Defect Evolution in FeCrAl Alloys under Single-, Dual- and Triple-Ion Beam Irradiation |
Author(s) |
Pengyuan Xiu, Li Jiang, Chao Ye, Lumin Wang |
On-Site Speaker (Planned) |
Pengyuan Xiu |
Abstract Scope |
Two FeCrAl alloys with different minor additives were irradiated with 6 MeV Au ions at a constant dose rate of 4x10-3 dpa/s to doses of 10, 25, 50 and 100 dpa at 400℃. Both alloys were also irradiated to 100 dpa at 475℃ and 575℃ to study the temperature effects, and with two more dose rates of 4x10-4 and 2x10-2 dpa/s to study the dose rate effect. High density of dislocation loops with Burgers vectors of 1/2<111> and <100> were observed after all irradiations. The formation of <100> loops seems to favors high temperature, low dose rate, and no effect of dose is observed. Although no voids were observed after the single Au ion beam irradiation, a low density of bubbles/voids exists after dual beam using H+Fe or He+Fe ions, or triple beam irradiation using H+He+Fe ions with appmHe/dpa and appmH/dpa to be 9 and 70 to 50 dpa. |
Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |