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Meeting 2026 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2026)
Symposium 2026 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2026)
Presentation Title Additively Manufactured GRX-810 Alloy: The Influence of Build Interruptions on Microstructure, Tensile Strength and Fatigue Life
Author(s) Javier E. Lares, Paul Gradl, Francisco Medina, Colton Katsarelis , Edel Arrieta
On-Site Speaker (Planned) Javier E. Lares
Abstract Scope This study investigates the effect of planned build interruptions on the microstructure, tensile behavior, and fatigue performance of laser powder-bed fusion (L-PBF) specimens in the non-heat-treated (NHT) and hot isostatic pressing (HIP) conditions. Samples were evaluated with and without build interruptions, and the results were compared before and after heat treatment. The findings showed that build interruptions did not produce measurable changes in tensile strength, ductility, or fatigue performance. In contrast, HIP-treated specimens exhibited lower strength and higher ductility than NHT samples, which was attributed to grain coarsening during HIP. Fatigue testing revealed a slight improvement in fatigue life for HIP specimens, likely due to the reduction of additive manufacturing defects during processing. Fractography revealed mixed-mode fracture behavior in all samples, along with evidence of pre-existing defects that reactivated during cyclic loading. Overall, planned build interruptions did not significantly affect the mechanical performance of the material.
Proceedings Inclusion? Undecided

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