Obtaining materials with controlled stiffness by additive manufacturing and heat treatments

• Grant number: 22/10049-6
• Support Opportunities: Scholarships in Brazil - Doctorate (Direct)
• Start date: September 01, 2022
• End date: October 13, 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
• Associated scholarship(s): 24/10229-0 - Investigation of the phases formed at the interface of Titanium Alloys with Controlled Stiffness Manufactured Via Laser Powder Bed Fusion, BE.EP.DD 24/10230-8 - Investigation on the Electrochemical Performance of Titanium Alloys with Controlled Stiffness Manufactured Via Laser Powder Bed Fusion, BE.EP.DD

Abstract

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)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

PRANDI, GILBERTO, V; RODRIGUES, JOAO FELIPE Q.; VALENTIM, MATHEUS; SANGALI, MARCIO; STARCK, LETICIA F.; SOYAMA, JULIANO; CARAM, RUBENS. HYbrid Titanium Alloys produced by laser powder bed Fusion using Ti-5553 and Ti-42Nb powder recycling. JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T, v. 27, p. 11-pg., 2023-12-06. (22/10049-6, 18/18293-8)