Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
EXPLORATORY STUDY OF Ti-35Nb OBTAINED BY POWDER METALLURGY
Submission Author:
Alexandra de Oliveira França Hayama , MT
Co-Authors:
Hayka Vieira, Thailler Machado Nunes da Silva, Sergio Soares, Alexandra de Oliveira França Hayama
Presenter: Thailler Machado Nunes da Silva
doi://10.26678/ABCM.COBEM2019.COB2019-1904
Abstract
To be applied as permanent implant material in the human body requires that it present a range of properties and characteristics that includes compatibility in physical and mechanical terms with the tissue to be replaced, biocompatibility and excellent resistance to the corrosion. In the case of metallic materials to be used in orthopedic implants, some titanium alloys can attend satisfactorily these requirements, such as β-type titanium alloys, such as the one used in this study. Such alloys have high hardness, excellent corrosion resistance and young’s modulus values close to the bone, and are composed of non-toxic and biocompatible elements. Titanium alloys can be obtained by melting processes in inert atmosphere or by powder metallurgy processes from the elementary powders, which is a viable alternative because it is possible to make pieces with complex geometries and dimensions close to the ends, with good surface finish. In addition, the sintering temperatures used are low compared to other metallurgical processes, and simple design furnaces with lower energy consumption can be used. The main results show that there was cold sintering of the niobium grains in the compacted samples at high pressures and also the occurrence of deformation twins in the particles of titanium.
Keywords
Titanium alloys, powder metallurgy, high pressures
