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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 Topology-Dependent Mechanical Response of Gyroid and Triangular Lattice Infill in Metal Additive Manufacturing
Author(s) Zarin Tahsin, Aref Yadollahi, Seyedmostafa Nasrollahpourshirvani, Oscar Queralt Torrecillas, Rauan Yeralkhan, Matthew John Prescott, Mohammad Mahtabi
On-Site Speaker (Planned) Zarin Tahsin
Abstract Scope Architected lattice infill in metal additive manufacturing (AM) enables mass reduction and property tailoring, yet the structural integrity of these topologies relative to solid counterparts under diverse loading conditions remains insufficiently quantified. This study evaluates gyroid, a triply periodic minimal surface (TPMS), and triangular strut-based lattice architectures in 17-4 PH stainless steel fabricated via atomic diffusion additive manufacturing, considering both as-built and H900 heat-treated conditions. A comprehensive experimental framework integrating tensile, compression, and Charpy impact testing with microstructural characterization and fractography is employed to establish topology-dependent mechanical response. The performance of lattice architectures is compared with their solid counterparts, and load-bearing capacity is evaluated with respect to effective material volume to enable consistent comparison across configurations. The results quantify the influence of lattice topology and post-processing on strength, deformation behavior, and energy absorption, providing a basis for assessing performance–manufacturability tradeoffs in lightweight metal AM components.
Proceedings Inclusion? Undecided

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