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- W4386572163 abstract "Additive manufacturing (AM) or rapid prototyping has become a crucial tool for reducing both cost and time while increasing efficiency in qualifying structural materials for reactor use. In this study, directed energy deposition (DED) was used to develop an as-built 316L stainless steel sample with three regions of increasing Hf-dopant to study the effects of Hf on the irradiation response of the material. Morphological and microstructural changes were analyzed before and after 2 MeV proton irradiation at 360°C to a damage of 2.5 dpa at ∼ 10 µm below the surface. The addition of Hf effectively suppressed radiation-induced damage (dislocation loops, radiation-induced segregation) due to enhanced point defect recombination. The radiation damage seen in the as-built sample was further compared to a thermo-mechanically treated counterpart of the same fabrication and irradiation parameters which was found to behave superiorly. The increased radiation resistance of this material may be attributed to the as-built microstructure, which includes undissolved Hf particles, delta ferrite grains and cellular sub-grain boundaries that can hinder defect motion." @default.
- W4386572163 created "2023-09-10" @default.
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- W4386572163 date "2023-12-01" @default.
- W4386572163 modified "2023-09-27" @default.
- W4386572163 title "The effect of secondary phases on microstructure and irradiation damage in an as-built additively manufactured 316L stainless steel with a hafnium compositional gradient" @default.
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- W4386572163 doi "https://doi.org/10.1016/j.jnucmat.2023.154708" @default.
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