Optimizing Suitable Mechanical Properties for a Biocompatible Beta-Titanium Alloy by Combining Plastic Deformation with Solution Treatment

The microstructural and mechanical features were investigated for the alloy Ti-36.5Nb-4.5Zr-3Ta-0.16O (wt.%) subjected to thermo-mechanical processing consisting of a series of hot and cold rolling combined with solution treatments with particular parameters. The objective was to find the optimal th...

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Bibliographic Details
Published in:Materials 2024-11, Vol.17 (23), p.5828
Main Authors: Irimescu, Raluca Elena, Raducanu, Doina, Nocivin, Anna, Cojocaru, Elisabeta Mirela, Cojocaru, Vasile Danut, Zarnescu-Ivan, Nicoleta
Format: Article
Language:English
Subjects:
Biocompatibility
Biological products
Biomedical materials
Chemical elements
Cold rolling
Diffraction
Ductility
Ductility tests
Mechanical properties
Modulus of elasticity
Optimization
Plastic deformation
Solution heat treatment
Specialty metals industry
Surgical implants
Temperature
Tensile tests
Thermomechanical properties
Thermomechanical treatment
Titanium
Titanium alloys
Titanium base alloys
Transplants & implants
Ultimate tensile strength
X-rays
Yield strength
Yield stress
Zirconium
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Summary:The microstructural and mechanical features were investigated for the alloy Ti-36.5Nb-4.5Zr-3Ta-0.16O (wt.%) subjected to thermo-mechanical processing consisting of a series of hot and cold rolling combined with solution treatments with particular parameters. The objective was to find the optimal thermo-mechanical treatment variant to improve the mechanical properties, and namely, to increase the yield tensile strength (YTS) and the ultimate tensile strength (UTS), with a low modulus of elasticity and with an adequate ductility in order to obtain a good biomaterial appropriate for use in hard tissue implants. X-ray diffraction and SEM microscopy served to investigate the microstructural features: the type of formed phases with their morphology, dimensions, and distribution. The experimental alloy presented mainly a β-phase with some α″-Ti martensitic phase in particular stages of the processing scheme. The main mechanical properties were found by applying a tensile test, from which were determined the yield tensile strength [MPa], the ultimate tensile strength [MPa], Young's modulus of elasticity [GPa], and the elongation to fracture (%).
ISSN:1996-1944
1996-1944
DOI:10.3390/ma17235828