|About this Abstract
||2021 TMS Annual Meeting & Exhibition
||Additive Manufacturing for Energy Applications III
||Quality Evaluation of As-printed Wire Arc Additively Manufactured 316L Stainless Steel Blocks
||Yukinori Yamamoto, Lizhen Tan, Ying Yang, Andrzej Nycz, Mark W Noakes, Yousub Lee, Luke T Meyer, William G Carter, Thak Sang Byun, Ryan R Dehoff, Kurt A Terrani
|On-Site Speaker (Planned)
Thick-wall blocks have been produced through wire arc additive manufacturing with heat-resistant steel wires, targeting development of a fabrication route for thick-wall reactor pressure vessels for future nuclear reactors to be operated at 600°C or above in the “as-printed” condition. A commercial 316L stainless steel (UNS31603) wire was selected for the first attempt, as one of the nuclear-grade austenitic stainless steels. Controlling the microstructure evolution during printing process would be highly important to achieve balanced mechanical properties such as hardness, toughness, tensile, and creep properties. The quality of the printed blocks, in terms of microstructure and mechanical properties, was correlated with the printing conditions including weld parameters, toolpath patterns, heating-and-cooling cycles, etc. Modification of the alloy composition was also initiated for controlling the solidification path to optimize the microstructure in as-printed components. Research sponsored by the U.S. Department of Energy, Office of Nuclear Energy, the Transformational Challenge Reactor (TCR) program.