Radiation-Induced Precipitation with Concurrent Bubbles Formation in an Austenitic Stainless Steel (Aisi-348)
16 Pages Posted: 9 Jul 2019 First Look: Accepted
Radiation-induced precipitation has been examined in an Nb-stabilised austenitic stainless steel (AISI-348) during heavy ion irradiation in situ within a transmission electron microscope (TEM) at 1073 K. Selected-area electron diffraction (SAED), bright- and dark-field TEM were used to investigate the nature of the precipitates within the austenite phase (γ-Fe). The precipitates were confirmed to be of Cr23C6 crystal structure. The results herein reported indicate that the concurrent formation of inert gas bubbles may accelerate clustering and precipitation kinetics in the austenite phase during irradiation.
Keywords: Austenitic Stainless Steels, Radiation Damage, Radiation Induced Precipitation, Heavy ion irradiation, Inert Gas Bubbles, AISI-348
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