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Effect of Sn content on phase transformations and properties of Ti-Mo alloys rapidly cooling and aging processing

Grant number: 07/03008-1
Support type:Scholarships in Brazil - Doctorate
Effective date (Start): August 01, 2007
Effective date (End): August 31, 2010
Field of knowledge:Engineering - Materials and Metallurgical Engineering - Physical Metallurgy
Principal researcher:Rubens Caram Junior
Grantee:Flávia Farias Cardoso
Home Institution: Faculdade de Engenharia Mecânica (FEM). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil

Abstract

The aim of this research is to study titanium alloys with beta-stabilizer elements for using in orthopedic implants. The combination of properties, such as low density, high mechanical strength, excellent fatigue resistance, good corrosion resistance and great biocompatibility makes beta titanium alloys appropriated for applications as implants. The work will be developed by obtaining, processing and characterizing Ti-Mo alloys with Sn additions. This study will be developed by analyzing: (a) the effect of Mo and Sn content on phase stability of water quenched and furnace cooled alloys; (b) the effect of Sn content on the omega phase formation; (c) the effect of aging condition (time and temperature) on phase precipitation and finally, (d) the mechanical behavior of water quenched and aged alloys. This work will be carried out by alloy preparation in arc furnace under controlled atmosphere, homogenizing heat treatments under different conditions, plastic deformation and microstructure characterization using optical and scanning electron microscopy and x-ray diffraction. The mechanical behavior will be evaluated by using tensile test and acoustic emission technique.

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