EXPLORING LAYERED MATERIALS USING LASER POWDER BED FUSION OF TITANIUM ALLOYS

• Grant number: 23/13947-8
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• Start date: September 01, 2024
• End date: August 31, 2026
• Field of knowledge: Engineering - Materials and Metallurgical Engineering - Physical Metallurgy
• Principal Investigator: Rubens Caram Junior
• Grantee: João Felipe Queiroz Rodrigues
• Host Institution: Faculdade de Engenharia Mecânica (FEM). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil
• Associated research grant: 18/18293-8 - Titanium alloys: phase transformations and additive manufacturing applied to obtaining functionally graded materials, AP.TEM

Abstract

Studies on processing multimaterials using laser powder bed fusion (L-PBF) are still quite scarce in the literature. In this context, this work aims to prepare samples made up of alternating layers of Ti-5553 and Ti-42Nb (wt.%) alloys through additive manufacturing using the L-PBF technique. The Ti-5553 alloy can exhibit very high mechanical strength in its aged state. On the other hand, the Ti-42Nb alloy, due to its high solute content, exhibits low mechanical strength combined with good ductility. The aim is to obtain layers with thicknesses between 150 and 450 µm. Process parameters that allow obtaining samples with a reduced level of porosity will be investigated. The effect of heat aging treatments will also be evaluated to increase the mechanical strength of the Ti-5553 alloy layers and, at the same time, to solution treat the layers formed by the Ti-42Nb alloy, obtaining a strong and still ductile material. Finally, the effect of the volumetric fraction of the Ti-5553 and Ti-42Nb alloy layers on the mechanical behavior of the layered material and the atomic diffusion at the interface between them will be also studied.