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

Anna Nocivin; Ion Cinca; Doina Raducanu; Vasile Danut Cojocaru; Ion Alexandru Popovici

doi:10.1007/s12613-017-1477-3

Volume 24 Issue 8

Aug. 2017

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Article Navigation > International Journal of Minerals, Metallurgy and Materials > 2017 > 24(8): 909-917

Anna Nocivin, Ion Cinca, Doina Raducanu, Vasile Danut Cojocaru, and Ion Alexandru Popovici, Mechanical properties of a Gum-type Ti-Nb-Zr-Fe-O alloy, Int. J. Miner. Metall. Mater., 24(2017), No. 8, pp. 909-917. https://doi.org/10.1007/s12613-017-1477-3

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Anna Nocivin, Ion Cinca, Doina Raducanu, Vasile Danut Cojocaru, and Ion Alexandru Popovici, Mechanical properties of a Gum-type Ti-Nb-Zr-Fe-O alloy, Int. J. Miner. Metall. Mater., 24(2017), No. 8, pp. 909-917. https://doi.org/10.1007/s12613-017-1477-3

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Research Article

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

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Corresponding author:
Ion Cinca E-mail: ion.cinca@upb.ro
Received: 18 November 2016; Revised: 30 March 2017; Accepted: 31 March 2017

Abstract

Abstract

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 β-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 μm).
- biomaterials;
- mechanical properties;
- Gum-type alloy;
- thermomechanical processing;
- tensile test

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