|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Additive Manufacturing for Energy Applications IV
||Topological Optimization of CoCrMo Lattice Structures Fabricated by Laser Powder Bed Fusion
||Bandar AlMangour, So-Yeon Park, Kyu-Sik Kim, Dariusz Grzesiak, Kee-Ahn Lee
|On-Site Speaker (Planned)
This study involves the fabrication of triply periodic minimal surface sheet lattices by laser powder bed fusion using CoCrMo alloy powder. The tensile properties and deformation behavior of the materials were evaluated by increasing the unit cell size (1, 2.5, and 5 mm) for each topology. The results of the tensile tests showed that the yield strengths and Young’s moduli of all topologies decreased and that their elongations increased with decreasing unit cell size. We compared the mechanical properties of the Neovius and IWP lattices, which had the same unit cell size, and found that the former exhibited higher yield strength, tensile strength, and elongation. Further, the tensile deformation behavior of the specimens was analyzed by applying the Gibson–Ashby analytic model. The Neovius lattice accommodated more uniform deformations in a greater number of cell layers.
||Additive Manufacturing, Copper / Nickel / Cobalt,