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Obtaining materials with controlled stiffness by additive manufacturing and heat treatments

Grant number: 22/10049-6
Support Opportunities:Scholarships in Brazil - Doctorate (Direct)
Effective date (Start): September 01, 2022
Effective date (End): March 31, 2026
Field of knowledge:Engineering - Materials and Metallurgical Engineering - Physical Metallurgy
Principal Investigator:Rubens Caram Junior
Grantee:Gilberto Vicente Prandi
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


Ti and its alloys allow the manufacturing of components with stiffness gradient, which can be obtained in parts with or without composition gradient. Among the Ti alloys, the Ti-13Nb-13Zr alloy is widely used in the manufacturing of orthopedic implant devices. In this alloy, Nb is the main beta stabilizing element, while Zr acts as a metastable phase suppressor. After solution and quenching to room temperature, this alloy presents an elastic modulus close to 80 GPa. Recent studies show that the Fe addition is an interesting strategy to obtain low-cost Ti alloys, with high mechanical strength and low elastic modulus. This research aims to modify the Ti-13Nb-13Zr alloy, adjusting the beta stabilizer contents, aiming to produce materials with functional gradients. The samples will be produced by additive manufacturing. Studies will also involve analyses of microstructure and mechanical properties after aging heat treatments. (AU)

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