Mechanical properties of a Gum-type Ti–Nb–Zr–Fe–O alloy

A new Gum-type alloy(Ti–Nb–Zr–Fe–O) in which Fe is used instead of Ta was subjected to a particular thermomechanical processing scheme to assess whether its mechanical characteristics(fine ?-grains with high strength and low modulus) render it suitable as a biomedical implant material. After a homog...

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Bibliographic Details
Published in:International journal of minerals, metallurgy and materials metallurgy and materials, 2017-08, Vol.24 (8), p.909-917
Main Authors: Nocivin, Anna, Cinca, Ion, Raducanu, Doina, Cojocaru, Vasile Danut, Popovici, Ion Alexandru
Format: Article
Language:English
Subjects:
Alloys
Ceramics
Characterization and Evaluation of Materials
Chemistry and Materials Science
Cold rolling
Composites
Corrosion and Coatings
Deformation mechanisms
Glass
Grain size
Iron
Materials Science
Mechanical properties
Metallic Materials
Microhardness
Modulus of elasticity
Natural Materials
Niobium
Recrystallization
Surfaces and Interfaces
Tensile tests
Thermomechanical treatment
Thin Films
Titanium base alloys
Tribology
Zirconium
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Summary:A new Gum-type alloy(Ti–Nb–Zr–Fe–O) in which Fe is used instead of Ta was subjected to a particular thermomechanical processing scheme to assess whether its mechanical characteristics(fine ?-grains with high strength and low modulus) render it suitable as a biomedical implant material. After a homogenization treatment followed by cold-rolling with 50% reduction, the specimens were subjected to one of three different recrystallization treatments at 1073, 1173, and 1273 K. The structural and mechanical properties of all of the treated specimens were analyzed. The mechanical characterization included tensile tests, microhardness determinations, and fractography by scanning electron microscopy. The possible deformation mechanisms were discussed using the Bo – Md diagram. By correlating all of the experimental results, we concluded that the most promising processing variant corresponds to recrystallization at 1073 K, which can provide suitable mechanical characteristics for this type of alloys: high yield and ultimate tensile strengths(1038 and 1083 MPa, respectively), a low modulus of elasticity(62 GPa), and fine crystalline grain size(approximately 50 ?m).
ISSN:1674-4799
1869-103X
DOI:10.1007/s12613-017-1477-3