EXPLORING CRYSTALLOGRAPHIC TEXTURE IN METASTABLE BETA TYPE Ti ALLOYS

• Grant number: 23/17771-1
• Support Opportunities: Scholarships in Brazil - Master
• Start date: May 01, 2024
• Status: Discontinued
• Field of knowledge: Engineering - Materials and Metallurgical Engineering - Physical Metallurgy
• Principal Investigator: Rubens Caram Junior
• Grantee: Carlos Samuel Alves da Silva
• 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): 25/02884-0 - SIMT mechanism and crack behavior in Ti-5553 alloy and Modified Ti-5553 alloy with B4C addition manufactured via Laser Powder Bed Fusion., BE.EP.MS

Abstract

The Ti-5553 alloy results from the search for lightweight, highly resistant metallic materials with a wide processing window. As it is a metastable beta Ti alloy, when solution heat-treated at high temperatures and quenched to room temperature, it shows the metastable BCC phase retention. When subjected to aging treatment, it can reach a yield strength of 1250 MPa. There is a significant volume of studies in the literature addressing aspects of the processing of Ti alloys by additive manufacturing. One of the unresolved issues is the formation of columnar grains. One possible way to control the transition from columnar to equiaxed grains in additive manufacturing is by adding the B4C compound. This work aims to investigate the formation of crystallographic texture during the processing of the Ti-5553 alloy with additions of B4C. The samples will be produced using the powder bed fusion technique. The characterization will involve the use of optical microscopy, scanning electrons using EBSD (electron backscattered diffraction), X-ray diffraction, mechanical hardness, nanoindentation, and tensile tests.