Gas permeability of Ti6Al4V foams prepared via gelcasting, experiments and modelling

J. Lux (1) , E. Guzi De Moraes , E. Maire (2) , Jérôme Adrien (2) , L. Biasetto

1 LaSIE - Laboratoire des Sciences de l'Ingénieur pour l'Environnement - UMR 7356
2 MATEIS - Matériaux, ingénierie et science [Villeurbanne]

The use of light components possessing tailored functional properties will represent one of the main issues for the development of new products. Open cells foams, where porosity is engineered in order to grant for lightness, high geometrical surface, interconnectivity and permeability, can be shaped using various techniques and possess regular or irregular structure. In this work, Ti6Al4V foams were produced using the gelcasting route, a technique usually employed for ceramics. Numerical simulations were carried out directly on 3D images of the foam's microstructure obtained by X-ray 3D µCT in order to predict the gas permeability properties of the produced samples. The obtained results were compared to experimental measurements of gas permeability. This approach could be useful for the prediction of Newtonian fluids permeability behavior of non-periodic and complex porous structures. © 2018 Elsevier B.V.

Mots clés: Geometrical surfaces; Functional properties; X rays; Vanadium alloys; Titanium alloys; Ternary alloys; Porosity; Newtonian liquids; Morphology; Metal foams; Mechanical permeability; Computerized tomography; Computational fluid dynamics; Aluminum alloys; Interconnectivity; Irregular structures; Newtonian fluids; Permeability properties; Porous structures; X-ray computed tomography; Gas permeability

Domaines: Matériaux; Mécanique [physics.med-ph]

J. Lux, E. Guzi De Moraes, E. Maire, Jérôme Adrien, L. Biasetto. Gas permeability of Ti6Al4V foams prepared via gelcasting, experiments and modelling. Computational Materials Science, 2018, 152, pp.363-373. ⟨10.1016/j.commatsci.2018.06.017⟩. ⟨hal-01916304⟩