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Meeting

2026 TMS Annual Meeting & Exhibition

Symposium

Late News Poster Session

Presentation Title

F-64: Relationship of Mechanical and Microstructural Properties of Additively Manufactured Inoculated Aluminum with Build Height

Author(s)

Austin J. Olivier, Vida Perez, Landon Schnebly, Levi Van Bastian, Hannah Sims, Jessica Buckner, Alex Hickman

On-Site Speaker (Planned)

Austin J. Olivier

Abstract Scope

Additive manufacturing (AM) of high strength aluminum alloys has traditionally been difficult due to solidification cracking, however inoculants and weld pool agitation have been shown to mitigate these solidification cracking issues through grain refinement. Wire feedstocks of Al6061 and Al7075 inoculated with ceramic particulates were deposited using Wire Arc Additive Manufacturing (WAAM), with select samples receiving T6 and T73 heat treatments. Microhardness testing was performed on samples of all conditions and the results were correlated with the microstructural properties of the material at different build heights. The hardness of the as built materials was found to increase with build height, while the heat treated materials had consistent hardness along the entire build. This work provides key insights into the process-structure-property relationships of AM inoculated Al6061 and Al7075. Sandia National Laboratories is a multimission laboratory managed and operated by National Technology & Engineering Solutions of Sandia, LLC, under contract DE-NA0003525.

Proceedings Inclusion?

Undecided

Keywords

Aluminum, Additive Manufacturing, Mechanical Properties

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