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15 results for “titanium alloys”
Titanium Alloys Database for Medical Applications
<p>The new 2.0 version (12.7.2023) includes the following modifications: 247 biocompatible Ti alloys; the table shows only literature data; a Jupyter notebook provides the calculated data.</p> <p>In this database, 238 titanium alloys were collected, almost entirely of biocompatible alloying elements. The primary motivation behind creating such a database is to establish a foundation for designing new alloys using machine learning methods. The database can assist researchers, engineers, and biomedical professionals in developing titanium alloys for various medical applications, thereby improving health outcomes and driving advancements in biomaterials and biomedical engineering.</p> <p>For more information read the paper at: <a href="https://doi.org/10.30544/MMD5"> https://doi.org/10.30544/MMD5 </a></p> <p>NOTE: To avoid misunderstandings, please cite both the database and the published article when citing this database.</p> <p>We invite other authors to contribute to the updating of this database (send at least 20 new alloys to appear as co-author)</p>
Additively Manufactured Titanium 'Alloy-Alloy Composites' and Site-Specific Property Design
<p>Paper links: Journal of Materials Characterization: https://doi.org/10.1016/j.matchar.2021.111577</p> <p>Research Gate (free preprint): https://bit.ly/3xy1Ldm</p> <p>Video written and produced by Alec Davis and Jacob Kennedy. Research was conducted at the University of Manchester and Cranfield University, UK, by Jacob Kennedy, Alec Davis, Armando Caballero, Michael White, Jon Fellowes, Ed Pickering, and Phil Prangnell. This work was supported by grants: NEWAM (EPSRC EP/R027218/1), Lightform (EPSRC EP/R001715/1), and Henry Royce Institute for Advanced Materials (EPSRC EP/R00661X/1, EP/S019367/1, EP/P025021/1, and EP/P025498/1).</p>
Characterization of a Nickel-Titanium (55.3 Ni wt%) shape memory alloy wire
<p>Characterization of a Nickel-Titanium (55.3 Ni wt%) shape memory alloy (SMA) wire supplied by Memry (USA).</p> <p>Diameter : 0.50mm</p> <p>Data given by the supplier : Nitinol wire, Hard black oxide, thermally straightened, As = 53°C</p> <p>Differential Scanning Calorimetry (DSC) test (as received) : a virgin sample of NiTi wire (7.9mg) is submitted to an initial heating up to 250°C, followed by 2 cooling-heating cycles (250°C/-90°C/+250°C). Test speed : 10°C per minute. The DSC apparatus is a DSC 250 (TA Instruments) with nitrogen gas flow. The test files for the software Trios are supplied as well as the .csv data.</p> <p>Differential Scanning Calorimetry (DSC) test (50 cycles) : the NiTi wire maintained in a water bath at a temperature of 70°C is submitted to 50 mechanical cycles of loading up to 90N and unloading down to 0.5N (superelastic cycles). A sample of this wire (8.1mg) is submitted to a DSC with an initial heating up to 250°C, followed by 2 cooling-heating cycles (250°C/-90°C/+250°C). Test speed : 10°C per minute.</p> <p>Isothermal traction at 25 degrees : a specific testing apparatus (illustration in the file Apparatus.jpg) has been set up. The SMA wire is tested in a box containing water, a water pumping/heating/cooling apparatus enables to control the water temperature in order to precisely control the SMA wire temperature. One side of the box is made of transparent PMMA in order to monitor the wire strains by Digital Image Correlation (DIC). The tested part of the wire finds itself in water, and its upper end is clamped in the cylinder jaws of a displacement controlled ADAMEL DY31 testing machine. The water temperature is monitored by two type K thermocouples at two different locations inside the water volume. The load in the wire is registered using a 100N load cell and the deformations of the wire were measured by DIC on images acquired by a Pike F421B camera (Allied Vision Technologies). A Matlab routine has been set up to acquire simultaneously the deformation images with the load values. A virgin wire of the same spool has been submitted to axial traction in 25°C water with a speed of 10^-4 s^-1. The first traction test presents a strain localization along the wire. We were not interested in this phenomenon and only present here the 2nd, 3rd and 4th test which show a homogeneous strain along the observed zone of the wire. The strain has been measured with the software GOM Correlate, by computing the mean value of the axial strain on a rectangular zone of several centimeters on the wire. The GOM Correlate files are supplied, as well as the .csv values. Between each test, the wire has been extracted from the testing chamber, placed in a furnace at 100°C during several minutes and then placed in a deep freezer at -20°C during several minutes in order to always test a martensitic wire.</p> <p>Thermal cycling at 25°C : With the same apparatus, a load of 25N has been applied on the wire at 85°C and then maintained constant with the help of a PID controller in the TestWorks software. The wire being maintained at this constant load, the water has been cooled down to 15°C and heated up to 85°C. The strain field could not be measured accurately, and for this reason the strain named Axial Strain 1, Axial Strain 2 and Axial Strain 3 are computed with virtual gauges in GOM Correlate (only between two points). The strain may be heterogeneous along the wire.</p>
Data for "Using transmission Kikuchi diffraction to characterise alpha variants in an alpha+beta titanium alloy"
<p>This zipped folder contains data for "Using transmission Kikuchi diffraction to characterise alpha variants in an alpha+beta titanium alloy" published in Journal of Microscopy.</p> <p>The zipped folder contains:<br> - Phase map, where green regions are indexed as alpha Ti and red regions are indexed as beta Ti.<br> - IPF orientation maps along the X, Y and Z directions (with both phases combined).<br> - IPF colour keys for the alpha and beta phases.<br> - FSD micrographs at lower and higher magnification (not resized: one pixel per acquisition data point).<br> - TKD_Trial.ctf - text file describing orientations according to Bruker software conventions [1], as-exported from Bruker Esprit 2.1.<br> - TKD_BOR_MTEXplotter.m, an MTEX plotting tool which will plot orientations for this dataset (using MTEX version 4.3.2 installed on MATLAB 9.2 (R2017a)).</p> <p>[1] T.B. Britton, J. Jiang, Y. Guo, A. Vilalta-Clemente, D. Wallis, L.N. Hansen, A. Winkelmann, A.J. Wilkinson, Tutorial: Crystal orientations and EBSD — Or which way is up?, Materials Characterization, Volume 117, July 2016, Pages 113-126, ISSN 1044-5803, http://dx.doi.org/10.1016/j.matchar.2016.04.008.<br> (http://www.sciencedirect.com/science/article/pii/S1044580316300924)</p>
Data from: Ultra-uniform, strong and ductile 3D printed titanium alloy through bifunctional alloy design
<p>Coarse columnar grains and heterogeneously distributed phases commonly form in metallic alloys produced by three-dimensional (3D) printing and are often considered undesirable because they can impart non-uniform and inferior mechanical properties. We demonstrate a design strategy to unlock consistent and enhanced properties directly from 3D printing. Using Ti−5Al−5Mo−5V−3Cr as a model alloy, we show that adding molybdenum (Mo) nanoparticles promotes grain refinement during solidification and suppresses the formation of phase heterogeneities during solid-state thermal cycling. The microstructural change due to the bifunctional additive results in uniform mechanical properties and simultaneous enhancement of both strength and ductility. We demonstrate how this alloy can be modified by a single component to address unfavourable microstructures, providing a pathway to achieve desirable mechanical characteristics directly from 3D printing.</p>
Dataset: The effect of a keyhole defect on strain localisation in an additive manufactured titanium alloy
<p><strong>This is the dataset used in the following publication: </strong></p> <div> <div> <div> <p>S. Cao, R. Thomas, A.D. Smith, P. Zhang, L. Meng, H. Liu, J. Guo, J. Donoghue, D. Lunt, The effect of a keyhole defect on strain localisation in an additive manufactured titanium alloy, Journal of Materials Research and Technology, https://doi.org/10.1016/j.jmrt.2024.11.237</p> </div> </div> </div> <p><strong>Contained in this dataset are:</strong></p> <p>A Jupyter notebook which uses the open-source DefDAP Python package (https://github.com/MechMicroMan/DefDAP) to open enclosed HRDIC and EBSD data for two regions in an SLM Ti64 sample, one around a keyhole defect and one ~1mm away in the bulk.</p> <p>Please use the 'master' version of DefDAP: <a href="https://github.com/MechMicroMan/DefDAP/tree/51074e158b0131c69358ddf7eee319e41cf582ca">https://github.com/MechMicroMan/DefDAP/</a></p> <p><strong>Publication abstract:</strong></p> <p>The influence of a keyhole defect on local deformation behaviour in additive manufactured Ti-6Al-4V was investigated by comparing it to a representative bulk region without a defect. High resolution digital image correlation (HRDIC) was used to measure the differences in strain localisation at the microstructural length-scale. A nanoscale speckle pattern was used to allow small changes in strain to be detected and resolved within a single individual lamella and at pre-existing crack locations around the defect. Strain localisation was observed around the defect and formed well below the macroscopic yield stress. In contrast, minimal deformation was found in the bulk at this stress level. Following further deformation into the plastic regime, the strain localisation around the keyhole became more heterogenous with a distinct strain field. A large amount of strain localisation and <c+a> slip was observed either side of the defect normal to the loading direction compared to relatively little in the regions close to the defect in line with the loading direction. This HRDIC observation was consistent with finite element analysis of the expected strain fields around the defect both below and above the yield point. Furthermore, micro-cracks were observed in αp/αp and αp/βt interfaces in both regions with the more pronounced strain fields around the defect leading to an increased number of long micro-cracks than in the bulk. The formation mechanisms of micro-cracks have been discussed, emphasising the role of localised strain caused by the defect.</p> <p> </p>
Dataset for paper entitled 'Microstructure transition gradients in titanium dissimilar alloy (Ti-5Al-5V-5Mo-3Cr/Ti-6Al-4V) tailored wire-arc additively manufactured components'
<p>Dataset for paper entitled 'Microstructure transition gradients in titanium dissimilar alloy (Ti-5Al-5V-5Mo-3Cr/Ti-6Al-4V) tailored wire-arc additively manufactured components'. doi: <a href="https://doi.org/10.1016/j.matchar.2021.111577">https://doi.org/10.1016/j.matchar.2021.111577</a></p>
Data bundle for "The role of beta-titanium ligaments in the deformation of dual phase titanium alloys"
<p>Data bundle for "The role of ¥â-titanium ligaments in the deformation of dual phase titanium alloys"</p> <p>Tea-Sung Jun1,2, Xavier Maeder3, Ayan Bhowmik1,a, Gaylord Guillonneau3,4, Johann Michler3, Finn Giuliani1, T. Ben Britton1*<br> 1 Department of Materials, Royal School of Mines, Imperial College London, London SW7 2AZ, UK<br> 2 Department of Mechanical Engineering, Incheon National University, Incheon 22012, Republic of Korea<br> 3 EMPA, Swiss Federal Laboratories for Materials Science and Technology, Laboratory for Mechanics of Materials and Nanostructures, Feuerwerkerstrasse 39, CH-3602 Thun, Switzerland<br> 4 Universite de Lyon, Ecole Centrale de Lyon, LTDS UMR CNRS 5513, 36 Avenue Guy de Collongue, 69134 Ecully Cedex, France<br> a now at Rolls-Royce@NTU Corporate Lab, Nanyang Technological University, Singapore</p> <p>For more information please contact: b.britton@imperial.ac.uk (Ben Britton)</p> <p>---</p> <p>This data bundle contains 1 file and 5 subfolders:</p> <p>Figures - all the images that were included in the paper<br> Subfolder for Figure 4 - raw data for load vs. displacement<br> Subfolder for Figure 7(A) - raw data for engineering stress vs. engineering strain <br> Subfolder for Figure 7(B) - cross court data and images of beta vertical micropillar <br> Subfolder for Figure 7(C) - cross court data and images of beta inclined micropillar<br> Subfolder for Figure 10 - raw data for stress relaxation vs. time</p>
Data from: Ultra-uniform, strong and ductile 3D printed titanium alloy through bifunctional alloy design
Open the record for dataset details and reuse information.
Dataser from paper "Proliferation of osteoblast precursor cells on the surface of TiO2 nanowires anodically grown on a -type biomedical titanium alloy"
<p>Dataser from paper "Proliferation of osteoblast precursor cells on the surface of TiO2 nanowires anodically grown on a -type biomedical titanium alloy":</p> <p>- <strong>Contact Angle: </strong>Images and measurements.</p> <p><strong>- Fluorescence Microscopy Images:</strong> Images.</p> <p><strong>- MTT and pixel counting:</strong> Measurements.</p> <p> </p> <p> </p> <p> </p> <p> </p> <p> </p> <p> </p>
3D-printed Porous Titanium Alloy Cages Versus PEEK Cages in Patients With Osteoporosis
ClinicalTrials.gov study NCT04086784. IPD Sharing: YES. Countries: 1. Publications: 12.
A Clinical Trial of Dental Implants in Titanium-zirconium Alloy
ClinicalTrials.gov study NCT02681250. IPD Sharing: NO. Countries: 1. Publications: 18.
Data from: Enhancement of apoptosis by titanium alloy internal fixations during microwave treatments for fractures: an animal study
Objective: Microwaves are used in one method of physical therapy and can increase muscle tissue temperature which is useful for improving muscle, tendon and bone injuries. In the study, we sought to determine whether titanium alloy internal fixations influence apoptosis in tissues subjected to microwave treatments at 2,450 MHz and 40 W during the healing of fractures because this issue is not yet fully understood. Methods: In this study, titanium alloy internal fixations were used to treat 3.0-mm transverse osteotomies in the middle of New Zealand rabbits' femurs. After the operation, 30-day microwave treatments were applied to the 3.0 mm transverse osteotomies 3 days after the operation. The changes in the temperatures of the muscle tissues in front of the implants or the 3.0 mm transverse osteotomies were measured during the microwave treatments. To characterize the effects of titanium alloy internal fixations on apoptosis in the muscles after microwave treatment, we performed TUNEL assays, fluorescent real-time (quantitative) PCR, western blotting analyses, reactive oxygen species (ROS) detection and transmission electron microscopy examinations. Results: The temperatures were markedly increased in the animals with the titanium alloy implants. Apoptosis in the muscle cells of the implanted group was significantly more extensive than that in the non-implanted control group at different time points. Transmission electron microscopy examinations of the skeletal muscles of the implanted groups revealed muscular mitochondrial swelling, vacuolization. ROS, Bax and Hsp70 were up-regulated, and Bcl-2 was down-regulated in the implanted group. Conclusion: Our results suggest that titanium alloy internal fixations caused greater muscular tissue cell apoptosis following 2,450 MHz, 40 W microwave treatments in this rabbit femur fracture models.
Microstructural heterogeneity in rate-dependent plasticity of multiphase titanium alloys
<p>This datasheet contains original data for figures 8 and 9 in the paper. If readers need further information, please feel free to contact: zhen.zhang@imperial.ac.uk</p>
Data from: Enhancement of apoptosis by titanium alloy internal fixations during microwave treatments for fractures: an animal study
Open the record for dataset details and reuse information.
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