Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
MICROSTRUCTURAL CHARACTERIZATION OF THE ALLOY Ti-6Al-4V OBTAINED BY DIFFERENT MANUFACTURING PROCESSES
Submission Author:
Cristiane Dias da Silva , SP , Brazil
Co-Authors:
maria larosa, André Jardini, Cecilia Zavaglia, Cristiane Dias da Silva
Presenter: Cristiane Dias da Silva
doi://10.26678/ABCM.COBEM2017.COB17-2103
Abstract
The planning and the proper choice of the manufacturing process are of extreme importance for a good final result, since each process has its particularity, which can influence the costs or the final quality of the product. Ti-6Al-4V titanium alloy is one of the most used for medical and aerospace applications because of its excellent mechanical properties, high corrosion resistance and biocompatibility. This work aims to compare the microstructural characteristics of the Ti-6Al-4V alloy obtained by the processes of lamination, powder metallurgy and Direct Metal Laser Sintering (DMLS). For this, the microstructure obtained in each of the different manufacturing processes was analyzed through optical microscopy, scanning electron microscopy and Vickers microhardness tests. The results showed that the Ti-6Al-4V alloy produced by the rolling process had a homogeneous, pore-free equiaxial microstructure composed of the alpha and beta phases. The material produced by the powder metallurgy process presented a lamellar microstructure, also composed of the alpha and beta phases, presenting a large amount of pores from the process. The microstructure resulting from the DMLS manufacturing process is composed of the hexagonal (martensitic) and beta-retained phases.
Keywords
TI-6AL-4V alloy, powder metallurgy, Lamination, Direct Metal Laser Sintering
