Intragranular irradiation-assisted stress corrosion cracking (IASCC) of 316L stainless steel made by laser direct energy deposition additive manufacturing: Delta ferrite-dislocation channel interaction

Jingfan Yang,Laura Hawkins,Lingfeng He,Samsul Mahmood,Miao Song,Kyle Schulze,Xiaoyuan Lou

Journal of Nuclear Materials（2023）

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摘要

•As-built DED 316L SS exhibited intragranular IASCC.•Fine delta ferrite particles were found from as-built DED AM 316L SS.•Delta ferrite particles impeded dislocation gliding and prevented GB sliding.•Strain localization near GBs was confirmed by nanoindentation.

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关键词

Direct energy deposition (DED),Additive manufacturing (AM),Austenitic 316L stainless steel,Irradiation-assisted stress corrosion cracking (IASCC),Delta ferrite,Nanoindentation

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