AMMT 2025 Milestone

Monson, Asa Garret [Idaho National Laboratory] (ORCID:0000000292724473); Roach, Allen [Idaho National Laboratory]; McMurtrey, Michael D [Idaho National Laboratory] (ORCID:0000000278352888)

DOE OSTI · 3399547

AMMT 2025 Milestone

Monson, Asa Garret [Idaho National Laboratory] (ORCID:0000000292724473)·Roach, Allen [Idaho National Laboratory]·McMurtrey, Michael D [Idaho National Laboratory] (ORCID:0000000278352888)

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Abstract

Idaho National Laboratory initiated the examination of nickel-based alloys manufactured laser powder directed energy deposition additive manufacturing for potential applications in nuclear, high temperature structural components. With the rapid push towards additive manufacturing, codes do not exist that definitively define what is or is not tolerable for each process and application, such as with conventional, wrought products. This report contains the initial work to understand possible manufacturing methods for high temperature alloys, and specifically, void formation, microstructure evolution, and mechanical properties. To generate mechanical test data, specimens were tested irrespective of voids and microstructures were analyzed to better understand how to negate/improve these issues. The preliminary results showed major decreases in mechanical performance for material tested. Test specimens will continue to be produced to further improve additive manufacturing processes, quantify void acceptance, and better understand the most suitable high temperature alloys receptive to additive manufacturing and high temperature nuclear applications.

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36 - MATERIALS SCIENCE additive manufacturing Creep directed energy deposition microstructure and mechanical properties Ni-superalloy

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Monson, Asa Garret [Idaho National Laboratory] (ORCID:0000000292724473), Roach, Allen [Idaho National Laboratory], McMurtrey, Michael D [Idaho National Laboratory] (ORCID:0000000278352888). 2025-08-01. AMMT 2025 Milestone. https://www.osti.gov/biblio/3399547

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