|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Additive Manufacturing of Large-scale Metallic Components
||Mechanical Response of Wire-arc Additively Manufactured LA100TM with and without Post-print Heat-treatments
||Yukinori Yamamoto, Sougata Roy, Peeyush Nandwana, Wei Tang, Andrzej Nycz, Mark Noakes, Ben Schaeffer, Badri Narayanan
|On-Site Speaker (Planned)
LA100TM is a low carbon and high manganese containing weld-filler steel wire which targets achieving 100 ksi tensile strength in the as-welded condition, suitable for a near-net shape component production through a wire-arc additive manufacturing technique. Because of relatively low phase-transformation temperature, the cyclic heating-and-cooling process during printing causes inhomogeneous microstructure evolution from place to place, which suggests a potential improvement of mechanical properties by applying a post-print heat treatment. The present study evaluated the effect of normalization-and-quenching and additional tempering on the mechanical properties of wire-arc additively manufactured LA100 walls, including tensile, impact toughness, and fatigue performance. The properties were correlated with the macro- and microstructures as a function of the post-print heat-treatments, and then utilized for optimization of the mechanical performance. Research sponsored by the U.S. DOE, Office of EERE, Additive Manufacturing Office, under contract DE-AC05-00OR22725 with UT-Battelle, LLC, and supported by a collaboration with Lincoln Electric.
||Additive Manufacturing, Iron and Steel, Mechanical Properties