Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
Comparative study of the mechanical properties of Ti-6Al-4V alloy manufactured by additive manufacturing using the electron beam melting (EBM) process and by conventional methods.
Submission Author:
Caique Movio Pereira de Souza , SP
Co-Authors:
Lucas Carlos de Sousa, Caique Movio Pereira de Souza, Rene Oliveira, Vanessa Seriacopi, Rogério Daniel Dantas, Wilson Carlos Silva Junior
Presenter: Caique Movio Pereira de Souza
doi://10.26678/ABCM.COBEM2023.COB2023-1402
Abstract
The Ti-6Al-4V alloy has been in existence for many decades, and its use has been increasing in recent years, particularly in the automotive, aerospace, and medical equipment sectors. Conventional manufacturing processes such as casting, machining, and forging have limitations in the production of parts with complex geometries, which increases the mass of products. Additive manufacturing (AM) has gained popularity due to the possibility of producing customized parts with less mass and complex and varied geometries. The Electron Beam Melting (EBM) additive manufacturing process is the most widely used in the medical field and is the subject of this study. It is necessary to study whether the mechanical properties of parts fabricated by EBM are the same as those fabricated by conventional methods. Mechanical and microstructural characterizations of parts fabricated by EBM were performed by a series of mechanical tests such as hardness, tensile, and Charpy impact tests. The results show that in the tensile test, the samples are within the ASTM F136 standard, since the average yield strength value obtained was 897.45 MPa, and the maximum stress obtained was 1054.92 MPa. The impact tests obtained an average result of 27.83 J/m, a value higher than that found in parts manufactured by conventional methods. The microstructural characterization indicates a phase change in both manufacturing processes, with the presence of α' martensite phase. The EBM-fabricated samples exhibit an α-Widmanstatten microstructure in the beta matrix with columnar grains.
Keywords
Ti6Al4V alloy, Additive manufacturing, Electron Beam Melting
