Study of the in-situ elaboration of Ti-Mo and Ti-Mo-Mn alloys by additive manufacturing (L-DED)

• Grant number: 24/01394-7
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: July 01, 2024
• End date: June 30, 2025
• Field of knowledge: Engineering - Materials and Metallurgical Engineering - Transformation Metallurgy
• Principal Investigator: Danielle Cristina Camilo Magalhães
• Grantee: Nicolas Setin Lara Resende
• Host Institution: Centro de Ciências Exatas e de Tecnologia (CCET). Universidade Federal de São Carlos (UFSCAR). São Carlos , SP, Brazil

Abstract

Additive Manufacturing (AM) techniques have the capability to fabricate components with complexgeometries using a variety of metals and alloys. The applicability of parts produced by AM extendsto vehicles, aircraft, as well as materials intended for orthopedic implants. In these fields, there is aclear demand for special alloys, especially in parts with intricate geometries that are challenging toobtain through conventional subtractive manufacturing processes. In the context of orthopedicapplications and biocompatible alloys, Ti-² alloys have stood out. This is primarily due to theirlower elastic modulus compared to alloys like Ti ±+², which are widely marketed for this purpose.In this scenario, the proposal to integrate AM processes with the use of Ti-² alloys with a lowerrelative elastic modulus for orthopedic implants emerges, focusing on the in-situ production of twoTi-Mo and Ti-Mo-Mn-based alloys using Laser Directed Energy Deposition (L-DED) technology.The anticipated challenges in this development lie in controlling deposition parameters to achievethe desired composition and appropriate microstructure of the alloys. Thus, the main objective ofthis scientific initiation project is the study and development of Ti-² alloys from elemental powdersemploying L-DED technology. The project scope includes an investigation of Ti-15Mo and Ti-15Mo-5Mn alloys, known for their set of mechanical, chemical, and biological properties that makethem compatible with use in orthopedic implants. Over the course of 12 months, planned activitiesinclude experiments for powder characterization, determination of L-DED processing variables forin-situ alloy production (tracks and areas), study of microstructures, and determination of the elasticmodulus.