Omega Phase Formation and Mechanical Properties of Ti–1.5 wt.% Mo and Ti–15 wt.% Mo Alloys after High-Pressure Torsion

Горнакова, А. С.; Korneva, Anna; Tyurin, A. I.; Afonikova, N. S.; Kilmametov, Askar; Straumal, Boris B.

doi:10.3390/pr11010221

Cited by 3 publications

(2 citation statements)

References 29 publications

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“…Titanium exhibits three distinct modifications: low-temperature α-Ti, high-temperature β-Ti, and high-pressure ω-Ti [47,48]. Notably, the formation of the ω phase becomes notably pronounced when subjected to elevated levels of deformation and pressure [49][50][51][52][53].…”

Section: Introductionmentioning

confidence: 99%

Influence of the Phase Composition of Titanium Alloys on Cell Adhesion and Surface Colonization

Straumal,

Anisimova,

Kiselevskiy

et al. 2023

Materials

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The pivotal role of metal implants within the host’s body following reconstructive surgery hinges primarily on the initial phase of the process: the adhesion of host cells to the implant’s surface and the subsequent colonization by these cells. Notably, titanium alloys represent a significant class of materials used for crafting metal implants. This study, however, marks the first investigation into how the phase composition of titanium alloys, encompassing the volume fractions of the α, β, and ω phases, influences cell adhesion to the implant’s surface. Moreover, the research delves into the examination of induced hemolysis and cytotoxicity. To manipulate the phase composition of titanium alloys, various parameters were altered, including the chemical composition of titanium alloys with iron and niobium, annealing temperature, and high-pressure torsion parameters. By systematically adjusting these experimental parameters, we were able to discern the distinct impact of phase composition. As a result, the study unveiled that the colonization of the surfaces of the examined Ti–Nb and Ti–Fe alloys by human multipotent mesenchymal stromal cells exhibits an upward trend with the increasing proportion of the ω phase, concurrently accompanied by a decrease in the α and β phases. These findings signify a new avenue for advancing Ti-based alloys for both permanent implants and temporary fixtures, capitalizing on the ability to regulate the volume fractions of the α, β, and ω phases. Furthermore, the promising characteristics of the ω phase suggest the potential emergence of a third generation of biocompatible Ti alloys, the ω-based materials, following the first-generation α-Ti alloys and second-generation β alloys.

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Section: Introductionmentioning

confidence: 99%

Influence of the Phase Composition of Titanium Alloys on Cell Adhesion and Surface Colonization

Straumal,

Anisimova,

Kiselevskiy

et al. 2023

Materials

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“…to result in increased hardness, reduced ductility and young's modulus leading to brittle fracture in many group IV element alloys [78], [79].…”

Section: Omega (ω) Phasementioning

confidence: 99%

Microstructural Characterization and Phase Prediction of High Entropy Alloys using Empirical and Machine Learning Based Methodologies

Mohammadi

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Alloys containing four or more principal alloying elements in near equal atomic percentage, so called High Entropy Alloys (HEA), break down the solvent-solute relationship generally seen in traditional alloys. This creates a vast and unpredictable design space, unfeasible to explore purely experimentally or through computational simulations. This thesis aims to present a newly developed machine learning based phase prediction methodology for HEA alloys, the empirical design and characterization of a Zr-containing HEA system, and a performance comparison of the developed methodology and established empirical method at predicting the impact of Zr on the phase composition with experimental results as a reference. Findings show that the developed phase prediction methodology, which leverages a convolutional neural network, could predict the formation of a secondary BCC solid solution phase within the high entropy alloys caused by the addition Zr and intermetallic compound formation, while the empirical parameters failed to do so.

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Development of a Novel β-Type Zr-25Ta-5Ti Alloy

Saraiva,

de Almeida,

Zambuzzi

et al. 2024

J. of Materi Eng and Perform

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Omega Phase Formation and Mechanical Properties of Ti–1.5 wt.% Mo and Ti–15 wt.% Mo Alloys after High-Pressure Torsion

Cited by 3 publications

References 29 publications

Influence of the Phase Composition of Titanium Alloys on Cell Adhesion and Surface Colonization

Influence of the Phase Composition of Titanium Alloys on Cell Adhesion and Surface Colonization

Microstructural Characterization and Phase Prediction of High Entropy Alloys using Empirical and Machine Learning Based Methodologies

Development of a Novel β-Type Zr-25Ta-5Ti Alloy

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