Investigating helium ion irradiation resistance in additively manufactured austenitic stainless steels

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dc.contributor.authorJin, HHen_AU
dc.contributor.authorRyu, ISen_AU
dc.contributor.authorKim, Jen_AU
dc.contributor.authorLim, Sen_AU
dc.contributor.authorKwon, Jen_AU
dc.contributor.authorKim, Sen_AU
dc.contributor.authorShin, Cen_AU
dc.contributor.authorDavis, Jen_AU
dc.contributor.authorXu, Aen_AU
dc.contributor.authorWei, Ten_AU
dc.contributor.authorBhattacharyya, Den_AU
dc.contributor.authorIonescu, Men_AU
dc.date.accessioned2025-04-03T05:39:44Zen_AU
dc.date.available2025-04-03T05:39:44Zen_AU
dc.date.issued2024-01en_AU
dc.date.statistics2025-01-29en_AU
dc.description.abstractAdditive manufacturing (AM) enables the rapid fabrication of complex shapes using engineering materials such as austenitic stainless steels and can imbue them with high irradiation resistance for use in reactor components. This is attributed to their refined grain structure and high grain boundary area. In this study, austenitic stainless steels (type 304) fabricated via direct energy deposition (DED) and powder bed fusion (PBF) techniques were irradiated with 5 MeV He ions to an approximate dose of 0.6 dpa at 300°C; subsequently, they were characterized through electron microscopy and the micro tensile testing. The results revealed that austenitic stainless steels manufactured using AM methods exhibited outstanding mechanical performance. The high performance of austenitic stainless steels fabricated through the DED technique can be attributed to their high tensile strength and excellent ductility elongation. This excellent performance is believed to be caused by the low stacking fault energy and the corresponding martensite formation during deformation. In particular, it was found that better mechanical properties were maintained even after helium irradiation, which is an important result obtained from the micro-tensile test. Even a small variation in the chemical composition and sub-microstructure of AM materials could result in improved irradiation tolerances. © 2023 The Authors. Published by Elsevier B.V.en_AU
dc.identifier.articlenumber154773en_AU
dc.identifier.citationJin, H.-H., Ryu, I. S., Kim, J., Lim, S., Kwon, J., Kim, S., Shin, C., Davis, J., Xu, A., Wei, T., Bhattacharyya, D., & Ionescu, M. (2024). Investigating helium ion irradiation resistance in additively manufactured austenitic stainless steels. Journal of Nuclear Materials, 588, 154773. doi:org/10.1016/j.jnucmat.2023.154773en_AU
dc.identifier.issn0022-3115en_AU
dc.identifier.journaltitleJournal of Nuclear Materialsen_AU
dc.identifier.urihttps://doi.org/10.1016/j.jnucmat.2023.154773en_AU
dc.identifier.urihttps://apo.ansto.gov.au/handle/10238/16122en_AU
dc.identifier.volume588en_AU
dc.languageEnglishen_AU
dc.language.isoenen_AU
dc.publisherElsevieren_AU
dc.subjectHeliumen_AU
dc.subjectIonsen_AU
dc.subjectIrradiationen_AU
dc.subjectStainless steelsen_AU
dc.subjectReactor componentsen_AU
dc.subjectElectron microscopesen_AU
dc.titleInvestigating helium ion irradiation resistance in additively manufactured austenitic stainless steelsen_AU
dc.typeJournal Articleen_AU
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