Phase transformations and aging effects in rapidly cooled Ti-Mo and Ti-Mo-Zr alloys

• Grant number: 05/01469-6
• Support Opportunities: Scholarships in Brazil - Master
• Start date: September 01, 2005
• End date: July 31, 2007
• Field of knowledge: Engineering - Materials and Metallurgical Engineering - Physical Metallurgy
• Principal Investigator: Rubens Caram Junior
• Grantee: Flávia Farias Cardoso
• Host Institution: Faculdade de Engenharia Mecânica (FEM). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil

Abstract

The aim of this research is to investigate beta Ti-Mo alloys to be used in ortophedic implants. The beta titanium alloys are advantageous when compared to alfa + beta alloys, not only because of their low Young’s modulus, which is considerably favourable to the bone tissue near the implant, but also because they are obtained from highly biocompatible elements, like Mo and Zr. The work deals with stability and metastability of beta alloys in the systems Ti-Mo and Ti-Mo-Zr and it will be achieved through the (a) evaluation of the influence of Mo content on the stability of phases under high cooling rates; (b) evaluation of the effect of time and temperature on the aging heat treatment for alfa precipitation in the metastable beta phase and (c) evaluation of Zr effect on the alloys studied in items (a) and (b). Arc melting under controlled atmosphere, swaging, heat treating under various conditions and characterization utilizing optical microscopy, scanning electron microscopy, X-ray diffraction and differential thermal analysis will be used during the development of the work. The results to be obtained are expected to improve the knowledge on the design of titanium alloys with beta stabilizing elements suitable for manufacturing ortophedic implants.

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

CARDOSO, Flávia Farias. Analysis of influence parameters on microstructure and properties of Ti-M0-Zr alloys applied in orthopedic implants. 2007. Master's Dissertation - Universidade Estadual de Campinas (UNICAMP). Faculdade de Engenharia Mecânica Campinas, SP.