Development of Ti-30 mass% Ta Alloy for Biomedical Applications

2005 ◽  
Vol 475-479 ◽  
pp. 2309-2312 ◽  
Author(s):  
Ying Long Zhou ◽  
Mitsuo Niinomi ◽  
Toshikazu Akahori ◽  
Hisao Fukui
Keyword(s):  
Tensile Properties ◽  
Biomedical Applications ◽  
High Strength ◽  
Rapid Quenching ◽  
Experimental Results ◽  
Dynamic Young’S Modulus ◽  
Solution Treated ◽  
Low Modulus ◽  
Dynamic Young's Modulus ◽  
Ice Water

In the present study, the effects of Ta content on the dynamic Young’s modulus and tensile properties of Ti−Ta alloys were investigated in order to find a Ti−Ta alloy that gives low modulus and high strength for biomedical applications. For this purpose, the ingots of Ti−Ta alloys with Ta contents from 10 to 50 mass % were melted, and then rolled into the plate of 3 mm thick. All the specimens were solution treated at 1223 K in the b field for 3.6 ks and then quenched in ice water. Subsequently, some of them were aged at 773 K for 259.2 ks followed by a rapid quenching in ice water. The corrosion capacity and biocompatibility of typical Ti−Ta alloy were also evaluated. The experimental results indicate that the Ti−30% Ta alloy has better mechanical biocompatibility, corrosion capacity and cyto-toxicity than Ti−6Al−4V alloy used as a standard biomaterial, and thus it will be of considerable development for biomedical applications.

scholarly journals A β-type TiNbZr alloy with low modulus and high strength for biomedical applications

2014 ◽  
Vol 24 (2) ◽  
pp. 157-162 ◽  
Author(s):  
Qingkun Meng ◽  
Shun Guo ◽  
Qing Liu ◽  
Liang Hu ◽  
Xinqing Zhao
Keyword(s):  
Biomedical Applications ◽  
High Strength ◽  
Low Modulus

Novel design of low modulus high strength zirconia scaffolds for biomedical applications

2019 ◽  
Vol 97 ◽  
pp. 375-384 ◽  
Author(s):  
Ana Marques ◽  
Georgina Miranda ◽  
Diana Faria ◽  
Paulo Pinto ◽  
Filipe Silva ◽  
...  
Keyword(s):  
Biomedical Applications ◽  
High Strength ◽  
Low Modulus ◽  
Novel Design

Composition optimization of low modulus and high-strength TiNb-based alloys for biomedical applications

2017 ◽  
Vol 65 ◽  
pp. 866-871 ◽  
Author(s):  
I.V. Okulov ◽  
A.S. Volegov ◽  
H. Attar ◽  
M. Bönisch ◽  
S. Ehtemam-Haghighi ◽  
...  
Keyword(s):  
Biomedical Applications ◽  
High Strength ◽  
Low Modulus ◽  
Composition Optimization

Numerical and Experimental Investigation on Tensile Properties of Natural-Sand Reinforced Polypropylene

2015 ◽  
Vol 1115 ◽  
pp. 283-287
Author(s):  
Ahmed N. Oumer ◽  
Idris Mat Sahat ◽  
Muhammad Ammar Nik Mu'tasim ◽  
Tedi Kurniawan
Keyword(s):  
Tensile Properties ◽  
Low Cost ◽  
Weight Ratio ◽  
Axial Loading ◽  
High Strength ◽  
Linear Increase ◽  
Experimental Results ◽  
Sand Particle ◽  
Natural Sand ◽  
Polypropylene Composites

Reinforced polymer composites are replacing metals in many engineering fields due to their high strength to weight ratio, low cost, and resistance to corrosion. In this study, the tensile properties of natural-sand particle reinforced polypropylene composites obtained by means of numerical method were compared with the experimental observations. Rectangular samples were prepared by heating the natural sand and polypropylene (PP) mixture at the melting temperature of PP and cooling in a rectangular mold. During cooling, pressure was applied on the upper part of the mold to avoid voids and shrinkages on the final sample. The concentration of the sand was varied as 5%, 10%, 15%, 20%, and 30% by weight. Then the samples were tested with 3-Point Bending and Universal Tensile Testing Machines to obtain the respective values of flexural and tensile properties of the composite samples. The numerical simulation was performed by using ANSYS software. For the simulation, structured mesh was constructed with 7500 elements and 36466 nodes. The experimental results indicated that the yield stress values dropped gradually from 21.62 MPa for 5% by weight to 8.01 MPa for 30% which leads to a conclusion that the higher the percentage of the sand particle reinforcement, the lower the tensile strength of the composite would be. Moreover, both the numerical and experimental results showed a linear increase in deflection with the increments of the applied load. These results are as expected and they confirm with the theoretical behavior of a bar subjected to axial loading. Hence, this study could assist in decisions regarding the design of reinforced composite products.

Effects of Nb Content on Young’s Modulus and Tensile Property of Ti-30Ta Alloy for Biomedical Applications

2011 ◽  
Vol 197-198 ◽  
pp. 32-35
Author(s):  
Yun Neng Wang ◽  
Yun Qing Ma ◽  
Shui Yuan Yang ◽  
Xu Liang Liu ◽  
Cui Ping Wang ◽  
...  
Keyword(s):  
Tensile Properties ◽  
Young’S Modulus ◽  
Tensile Property ◽  
Biomedical Applications ◽  
Young's Modulus ◽  
High Strength ◽  
Young’S Moduli ◽  
Β Phase ◽  
Nb Content ◽  
Nb Addition

The effects of Nb addition on microstructures, Young’s moduli, tensile properties of Ti-30Ta-xNb (x = 21, 24, 27, 30, wt. %) alloys were investigated in this study. The results show that dual phases containing β phase and a little α" martensite were observed when x = 21 and 24, whereas single β phase is present when x = 27 and 30. A minimum Young’s modulus of 52.13 GPa was obtained in Ti-30Ta-21Nb alloy. Ti-30Ta-xNb alloys exhibit high strength-to-modulus ratios, showing their great potentials to develop as new candidates for biomedical applications.

scholarly journals Effect of twist level on the mechanical performance of S-glass yarns and non-crimp cross-ply composites

2021 ◽  
pp. 152808372098720
Author(s):  
Hussein Kommur Dalfi ◽  
Muhammad Tausif ◽  
Zeshan yousaf
Keyword(s):  
Tensile Strength ◽  
Tensile Properties ◽  
Composite Laminates ◽  
Mechanical Performance ◽  
High Strength ◽  
Strength Properties ◽  
Experimental Results ◽  
Yarn Twist ◽  
Twist Level ◽  
High Level

High modulus/high strength continuous fibres are used extensively for manufacturing textile preforms, as a reinforcement, for composites due to their excellent specific properties. However, their brittle behaviour and tendency to separate easily into individual filaments or bundles can lead to damages during manufacturing processes such as weaving and braiding. Thus, the critical step in the development of an optimal yarn for textile-reinforced composites is to find an optimum twist, which results in a minimum loss of properties of the composite laminates, while maintaining good processability and sufficient strength for textile and/or composite manufacturing. In this study, twist level has been varied to improve the handling and tensile properties of S-glass yarns (i.e. tensile strength). Varying levels of yarn twist (15–40 twists metre−1) were employed to study its impact on the tensile properties (i.e. tensile strength, modulus, elongation at break etc.). Furthermore, the effect of twist on the tensile properties of non-crimp cross-ply composites produced via vacuum infusion process was studied. It was observed that mechanical performance (i.e. tensile strength properties) of twisted yarns is improved up to 30 twists metre−1 while it is deteriorated at 40 twists metre−1. At yarn level, the experimental results were compared with theoretical estimations utilizing existing models for twisted yarns properties. Discrepancies were observed between experimental and theoretical results especially for high level of twist. The tensile strength and elongation of S-glass cross-ply composites at all levels of twist were higher compared to the composite laminates manufactured by using non-twisted yarns. At composite level, the experimental results were also computed employing rule of mixture and good agreement was observed between experimental and predicted results.

scholarly journals STRAIN INDUCED PHASE TRANSFORMATION IN Ti-15Mo β ALLOY

2020 ◽  
Vol 321 ◽  
pp. 12015
Author(s):  
Xiaoming Wang ◽  
Bernard Li
Keyword(s):  
Phase Transformation ◽  
Biomedical Applications ◽  
Stable State ◽  
High Strength ◽  
Cold Plastic Deformation ◽  
Β Phase ◽  
Ω Phase ◽  
High Fatigue ◽  
Low Modulus ◽  
Cold Draw

β-Ti alloys have been chosen for biomedical applications attributed to a combination of high strength, high fatigue resistance, good corrosion resistance and more importantly low modulus closer than other metallic materials for implants and osseointegrated prosthesis to the cortical elastic modulus (4-30 GPa). However, the phase constituents and phase transformation are still under dispute. A Ti-15Mo alloy after severe cold plastic deformation is studied to reveal the phases and phase transformation by TEM techniques. Athermal ω phase was observed in all samples evidencing the high stability of ω phase compared to β phase. However, the β to ω transformation does not proceed to a completion in heat treatment. Strain induced phase transformation happens in cold-draw wires through a coordinated shuffle of atoms along the {2 1 1}planes of β phase leading to the reduction on the <1 1 1> directions. The atomic level of shear causes the transformation of β to ω. The transformation of β to athermal ω under a train is not in a stable state but having a variable crystal structure between β and ω.

Mechanical Properties of Binary Ti-Ta Alloys for Biomedical Applications

2004 ◽  
Vol 449-452 ◽  
pp. 1089-1092 ◽  
Author(s):  
Ying Long Zhou ◽  
Mitsuo Niinomi ◽  
Toshikazu Akahori
Keyword(s):  
Mechanical Properties ◽  
Biomedical Applications ◽  
Metastable Phase ◽  
High Strength ◽  
Mass Percentage ◽  
Good Balance ◽  
Low Modulus

The effect of Ta content on the mechanical properties of the quenched binary TiTa alloys with different mass percentage of Ta from 10 to 80% was investigated in order to find a Ta content that gives a good balance of low modulus and high strength for biomedical applications. The mechanical properties of binary TiTa alloys depend strongly on the microstructures caused by Ta content. Among all the studied Ti–Ta alloys, Ti30 mass % Ta alloy with martensite ” and Ti70 mass % Ta alloy with metastable phase have the potential to be the new candidates for biomedical applications

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