Corrosion performance in additively manufactured Ti-35Nb-6Ta alloys with Sn and Zr additions

• Grant number: 25/26404-8
• Support Opportunities: Scholarships abroad - Research Internship - Scientific Initiation
• Start date: March 01, 2026
• End date: June 30, 2026
• Field of knowledge: Engineering - Materials and Metallurgical Engineering - Physical Metallurgy
• Principal Investigator: Rubens Caram Junior
• Grantee: Guilherme Jun Maki
• Supervisor: Roche Virginie
• Host Institution: Faculdade de Engenharia Mecânica (FEM). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil
• Institution abroad: Université Grenoble Alpes (UGA), France
• Associated to the scholarship: 25/09707-7 - MICROSTRUCTURE AND MECHANICAL BEHAVIOR OF Ti-35Nb-6Ta ALLOYS WITH Sn AND Zr ADDITIONS AND PROCESSED BY ADDITIVE MANUFACTURING, BP.IC

Abstract

Titanium alloys combine high strength, low density, and excellent corrosion resistance, making them suitable for diverse applications. Through alloying and heat treatments, their properties can be tailored. Certain compositions exhibit notable biocompatibility and a high strength-to-weight ratio, which are particularly attractive for biomedical applications. In this context, additive manufacturing enables the development of patient-specific implants, enhancing their potential in clinical applications. The Ti-35Nb-6Ta alloy is a metastable beta titanium alloy predominantly composed of the beta phase, which exhibits relatively low mechanical strength, and may contain small fractions of the omega phase, known to cause embrittlement. Previous studies indicate that the addition of tin (Sn) and zirconium (Zr) stabilizes the beta phase and suppresses omega phase formation, thereby improving mechanical behaviour. It is expected that Ti-Nb-Ta alloys with Sn and Zr additions, produced by laser beam powder bed fusion (PBF-LB/M), will exhibit promising mechanical performance; however, their corrosion behavior still requires investigation for the intended application. Therefore, this study aims to evaluate the electrochemical behavior of Ti-Nb-Ta-Sn-Zr alloys produced by PBF-LB/M. (AU)