|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Additive Manufacturing of Large-scale Metallic Components
||Microstructure Control in Wire-arc Additively Manufactured Maraging Steels
||Yukinori Yamamoto, Peeyush Nandwana, Andrzej Nycz, Mark Noakes, Ben Schaeffer, Badri Narayanan
|On-Site Speaker (Planned)
Alloy design of maraging steels is highly matched with a nature of additive manufacturing technique since the major strengthening process relies on post-print heat treatments without thermomechanical treatments. Printing near-net shape components, followed by the strengthening heat-treatments, allows the production of large-scale metal components to be readily used for various applications, such as die-tools, after applying a limited amount of surface machining. The present study focused on wire-arc additively manufactured (WAAM) maraging 250/300/350 steels which applied standard and modified heat-treatments, targeting maximized hardness suitable for die-tool applications together with isotropic mechanical performance through controlling an equi-axed prior-austenite grain structure. Microstructural responses after various heat-treatments were corelated with the mechanical properties, and then utilized for optimization of heat-treatment suitable for the WAAM maraging steels. 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