What question did this study set out to answer?

To develop and evaluate a low-modulus, non-toxic Ti-19Nb-10Zr-6Sn-2.5Fe alloy synthesized via elemental powder metallurgy to mitigate stress shielding in orthopedic implants.

September 1, 2026MaterialiaOpen Access

A Low-Modulus Ti-19Nb-10Zr-6Sn-2.5Fe (TNZSF) Alloy for Biomedical Applications: Processing via Elemental Powder Metallurgy and Mechanical Evaluation

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Authors

GPGilberto Vicente Prandi MVMatheus Valentim JRJoão F. Queiroz Rodrigues

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Overview

Experimental study demonstrates low stiffness and high corrosion resistance in a novel titanium alloy, highlighting potential to reduce stress shielding in bone implants.

Key Points

To develop and evaluate a low-modulus, non-toxic Ti-19Nb-10Zr-6Sn-2.5Fe alloy synthesized via elemental powder metallurgy to mitigate stress shielding in orthopedic implants.
Fabricated the alloy using blended elemental powders and evaluated the material directly in the as-sintered condition without post-sintering heat treatment.
Characterized microstructure, phase stability, and porosity using thermodynamic modeling, XRD, SEM-EDS, and EBSD.
Assessed mechanical performance via tensile, four-point bending, and small-punch tests, along with corrosion resistance via potentiodynamic polarization in Ringer's solution and 730-hour static immersion in artificial saliva.
Tensile evaluation demonstrated a Young’s modulus of 65 ± 3 GPa, yield strength of 536 ± 24 MPa, ultimate tensile strength of 583 ± 4 MPa, and 9.8 ± 0.2% elongation, consistent with a small-punch yield strength of 532 ± 17 MPa.
Four-point bending revealed an ultimate flexural strength of 1130 ± 9 MPa and a flexural modulus of 60 ± 2 GPa in the presence of 2.5 ± 0.2% porosity.
Potentiodynamic testing showed a corrosion current density of 0.700 ± 0.070 μA·cm⁻² with passivity up to ~1.5 V, while 730-hour ion release rates remained between 0.008 and 0.032 μg·cm⁻²·day⁻¹.

Cite This Study

Prandi et al. (2026) studied this question.

synapsesocial.com/papers/6aae08a5689bb7e292649fb5 https://doi.org/10.1016/j.mtla.2026.102899

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September 1, 2026MaterialiaOpen Access

A Low-Modulus Ti-19Nb-10Zr-6Sn-2.5Fe (TNZSF) Alloy for Biomedical Applications: Processing via Elemental Powder Metallurgy and Mechanical Evaluation

View Full Paper

Ask AI

Bookmark

Authors

GPGilberto Vicente Prandi MVMatheus Valentim JRJoão F. Queiroz Rodrigues

Discussion

Member takes

Overview

Experimental study demonstrates low stiffness and high corrosion resistance in a novel titanium alloy, highlighting potential to reduce stress shielding in bone implants.

Key Points

To develop and evaluate a low-modulus, non-toxic Ti-19Nb-10Zr-6Sn-2.5Fe alloy synthesized via elemental powder metallurgy to mitigate stress shielding in orthopedic implants.
Fabricated the alloy using blended elemental powders and evaluated the material directly in the as-sintered condition without post-sintering heat treatment.
Characterized microstructure, phase stability, and porosity using thermodynamic modeling, XRD, SEM-EDS, and EBSD.
Assessed mechanical performance via tensile, four-point bending, and small-punch tests, along with corrosion resistance via potentiodynamic polarization in Ringer's solution and 730-hour static immersion in artificial saliva.
Tensile evaluation demonstrated a Young’s modulus of 65 ± 3 GPa, yield strength of 536 ± 24 MPa, ultimate tensile strength of 583 ± 4 MPa, and 9.8 ± 0.2% elongation, consistent with a small-punch yield strength of 532 ± 17 MPa.
Four-point bending revealed an ultimate flexural strength of 1130 ± 9 MPa and a flexural modulus of 60 ± 2 GPa in the presence of 2.5 ± 0.2% porosity.
Potentiodynamic testing showed a corrosion current density of 0.700 ± 0.070 μA·cm⁻² with passivity up to ~1.5 V, while 730-hour ion release rates remained between 0.008 and 0.032 μg·cm⁻²·day⁻¹.

Cite This Study

Prandi et al. (2026) studied this question.

synapsesocial.com/papers/6aae08a5689bb7e292649fb5 https://doi.org/10.1016/j.mtla.2026.102899

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