MECHANICAL RESPONSES OF 316L STAINLESS STEEL PRINTED BY WIRE ARC ADDITIVE MANUFACTURING WITH DIFFERENT THERMAL HISTORIES

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Abstract

In this paper, 316L stainless steel walls were printed using single-bead pass and multiple-bead pass wire arc additive manufacturing (WAAM), which represent the internal basket wall and external wall of a spent nuclear fuel (SNF) canister, respectively. Scanning electron microscopy (SEM) microstructure characterization and tensile tests at room temperature (21 °C) and elevated temperature (250 °C, the maximum temperature at the center of a SNF canister.) were performed on specimens extracted along the length and height directions of the printed walls. Results showed that grain morphology, grain angles, and retained ferrite are different between the two printed walls, which received different heat input in WAAM. The single-bead pass printed wall exhibited higher yield strength than the multiple-bead pass printed wall because of more retained ferrite and larger portion of random-high angle boundaries (RHAB) grains.

Original languageEnglish
Title of host publicationOperations, Applications and Components
PublisherAmerican Society of Mechanical Engineers (ASME)
ISBN (Electronic)9780791887493
DOIs
StatePublished - 2023
EventASME 2023 Pressure Vessels and Piping Conference, PVP 2023 - Atlanta, United States
Duration: Jul 16 2023Jul 21 2023

Publication series

NameAmerican Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
Volume6
ISSN (Print)0277-027X

Conference

ConferenceASME 2023 Pressure Vessels and Piping Conference, PVP 2023
Country/TerritoryUnited States
CityAtlanta
Period07/16/2307/21/23

Funding

The work performed in this paper was funded by the US Department of Energy (DOE) Office of Nuclear Energy (NE) Office of Spent Fuel and Waste Disposition (SFWD) Integrated Waste Management (IWM), within work package SF-21OR02020109, “Standardization and Integration.” The authors gratefully acknowledge Oak Ridge National Laboratory (ORNL) Manufacturing Demonstration Facility (MDF) and Low Activation Materials Development and Analysis Laboratory (LAMDA) for WAAM and microstructure characterization. We would like to thank Dixon Travis and Sarah Graham for specimens cutting, preparation, and machining coordination. The authors acknowledge Jorge Narvaez at the DOE’s Office of Spent Fuel and Waste Disposition, Xiang Chen and Abiodun Adeniyi at ORNL for technical reviewing this paper.

FundersFunder number
U.S. Department of Energy
Office of Nuclear EnergySF-21OR02020109

    Keywords

    • 316L stainless steel
    • Wire arc additive manufacturing
    • mechanical responses
    • thermal history

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