Relatore
Descrizione
〖Carolina Schillaci〗^1, 〖Alberto Boschetto〗^2, 〖Luana Bottini〗^2, Niccolò Burattini2, Luca Cortese2, Gabriele Cortis2,〖Pietro Foti〗^1, 〖Daniela Pilone〗^1, 〖Filippo Berto〗^1
1Department of Chemical Engineering, Materials and Environment, La Sapienza University of Rome, Via Eudossiana 18, 00184, Rome, Italy
2 Department of Mechanical Engineering, Materials and Environment, La Sapienza University of Rome, Via Eudossiana 18, 00184, Rome, Italy
Lattice structures are porous structures of growing interest, due to their fascinating performances, such as large specific surface area, low elastic modulus, and high stiffness-to-weight ratio. These advantages make lattice structures highly suitable for applications across various industries, including biomedical, automotive, and aerospace; all sectors where fatigue strength is crucial for extending service life.
Among lattice structures, triply periodic minimal surface structures (TPMS) have demonstrated superior mechanical properties compared to their equivalent strut-based ones. However, accurately fabricating these complex geometries remains challenging with conventional manufacturing methods.
This study aims at investigating the static behaviour of Ti6Al4V gyroid-type lattice structures produced through selective laser melting (SLM). The effects of different thermal treatments above 700°C are evaluated in terms of microstructure. Static compression tests are performed to assess the impact of these treatments on lattice mechanical properties: the samples subjected to a heat treatment at temperatures above 900°C exhibited greater toughness and a lower yield strength.
