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

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

scholarly journals Sintering of Ti-based biomedical alloys with increased oxygen content from elemental powders

2020 ◽  
Vol 321 ◽  
pp. 05010
Author(s):  
J. Stráský ◽  
J. Kozlík ◽  
K. Bartha ◽  
D. Preisler ◽  
T. Chráska
Keyword(s):  
Mechanical Properties ◽  
Oxygen Content ◽  
High Strength ◽  
Simple Approach ◽  
Fine Tuning ◽  
Powder Metallurgy Method ◽  
Ti Alloys ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Low Modulus

Revived interest for beta Ti alloys with increased oxygen content is motivated by the prospect of achieving material with low modulus and high strength simultaneously. Fine tuning of amount of oxygen and beta stabilizing elements is critical for achieving good mechanical properties. This study shows that powder metallurgy method of spark plasma sintering is capable of producing Ti-Nb-Zr-O alloys from elemental powders. This simple approach allows for quick sampling and production of several alloys with various chemical composition. Elemental powders were mixed with appropriate amount of titanium dioxide to achieve Ti-29Nb-7Zr-0.7O alloy. Sintering was performed at 1400 - 1500 °C for 15 – 30 minutes.

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

Phase Transformation Behavior and Mechanical Properties of Ti-Mo-Sn Alloys

2013 ◽  
Vol 747-748 ◽  
pp. 855-859
Author(s):  
Xiao Xue Chen ◽  
Shun Guo ◽  
Xin Qing Zhao
Keyword(s):  
Mechanical Properties ◽  
Cold Rolling ◽  
Cold Deformation ◽  
High Strength ◽  
Mechanical Tests ◽  
X Ray Diffraction ◽  
Superior Mechanical Properties ◽  
Low Modulus ◽  
Mo Content

A series of Ti-Mo-Sn alloys with different Mo contents from 7% to 15% (wt. %) were prepared, and the effects of Mo content and thermo-mechanical treatment on their microstructural evolution and mechanical behavior were investigated. The experimental results indicated that the β to α martensite transformation can be effectively suppressed with increasing Mo content. After cold rolling treatment, superior mechanical properties and low modulus were achieved in Ti-8Mo-4Sn alloy, with tensile strength of 1108MPa, yield strength of 1003MPa and low Youngs modulus of 53GPa. The influence of severe cold deformation on the macrostructure and mechanical properties was discussed based on the characterization of X-Ray diffraction and mechanical tests. It was demonstrated that the cold rolling induced fine α martensite and high density dislocations lead to the high strength of the Ti-Mo-Sn alloys. The fine α martensite as well as the β matrix with low stability guarantee low Youngs modulus.

scholarly journals Mechanical properties and ageing resistance of slip cast and pressurelessly sintered ZTA - the influence of composition and heat treatment conditions

2019 ◽  
Vol 51 (3) ◽  
pp. 243-256 ◽  
Author(s):  
Nicole Yildirim ◽  
Frank Kern
Keyword(s):  
Mechanical Properties ◽  
Biomedical Applications ◽  
High Strength ◽  
High Tendency ◽  
Mechanical And Tribological Properties ◽  
Treatment Conditions ◽  
Stabilizer Concentration ◽  
Slip Cast ◽  
Sintering Conditions ◽  
Zirconia Toughened Alumina

Zirconia toughened alumina (ZTA) ceramics are used in a broad range of mechanical engineering and biomedical applications due to their excellent mechanical and tribological properties. In this study it was tried how the change in stabilizer composition and sintering conditions can be exploited to selectively modify the mechanical properties and low temperature degradation resistance of ZTA materials with a typical biomedical grade composition. It was found that the materials react very sensitively to such changes. Fully dense materials combining favorable mechanical properties such as high strength > 800 MPa, fracture toughness > 5.5 MPa?m and LTD resistance can only be produced in a narrow stabilizer concentration range between 1.1-1.2 %. Beyond this range materials are either insufficiently stabilized which results in poor strength and high tendency to LTD, or over stabilized and no longer susceptible to stress induced phase transformation and therefore too brittle. Changes in reinforcement mechanisms can be attributed to changes in microstructure and phase composition caused by variation of stabilizer content and sintering conditions.

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

scholarly journals Chopped Polyethylene Fibre Reinforced Ethylene-Butene Copolymers

2000 ◽  
Vol 9 (5) ◽  
pp. 096369350000900 ◽  
Author(s):  
Diana Feigelshtein ◽  
Hannah Harel ◽  
Arnold Lustiger ◽  
Gad Marom
Keyword(s):  
Mechanical Properties ◽  
Composite Material ◽  
Yield Stress ◽  
High Strength ◽  
Fibre Content ◽  
High Ductility ◽  
New Family ◽  
Polyethylene Fibre ◽  
Low Modulus

This study verifies the option to process chopped polyethylene fibre reinforced polyolefins without causing fibre relaxation. It generates a new family of materials whose property range is as wide as the number of combinations of matrix choice and fibre content. The generic effect of the fibre on the mechanical properties is to turn a soft polyolefin matrix, characterised by low modulus and yield stress and high ductility, into a rigid, high strength composite material.

Effect of Y2O3 on Mechanical Properties of Ti-29Nb-13Ta-4.6Zr for Biomedical Applications

2010 ◽  
Vol 654-656 ◽  
pp. 2138-2141 ◽  
Author(s):  
Xiu Song ◽  
Mitsuo Niinomi ◽  
Harumi Tsutsumi ◽  
Toshikazu Akahori ◽  
Masaaki Nakai ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Tensile Strength ◽  
Young’S Modulus ◽  
Biomedical Applications ◽  
Mechanical Performance ◽  
Young's Modulus ◽  
Good Balance ◽  
Young’S Moduli ◽  
Β Phase

Y2O3 was added to β-type Ti-29Nb-13Ta-4.6Zr (TNTZ) in order to achieve excellent mechanical performance and low Young’s modulus. TNTZ specimens with 0.05%–1.0% Y are all found to be composed of a β phase. Young’s moduli of TNTZ with 0.05–1.0% Y are all maintained low, and are almost the same as that of TNTZ without Y2O3. The grain size of TNTZ with 0.05%–1.0% Y is smaller than that of TNTZ without Y2O3. Moreover, Y2O3 precipitates can prevent the texture movement, and this effect becomes more obvious with an increase in the Y concentration. The tensile strength of TNTZ is successfully improved by adding Y2O3. TNTZ specimens with 0.2% and 1.0% Y exhibit good balance between the tensile strength and the elongation.

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.

The Mechanical Properties of a New Titanium Alloys with Low Modulus

2007 ◽  
Vol 351 ◽  
pp. 243-247 ◽  
Author(s):  
Hong Hua Wang ◽  
Chen Rong ◽  
Di Zhang
Keyword(s):  
Mechanical Properties ◽  
Fatigue Crack ◽  
Elastic Modulus ◽  
Cold Working ◽  
High Strength ◽  
Deformation Energy ◽  
Α Phase ◽  
Low Elastic Modulus ◽  
High Elasticity ◽  
Low Modulus

We developed a new titanium alloy with high strength, low elastic modulus, high elasticity and plasticity after cold working. Thermo mechanical processing, ageing, recrystallization after cold working was conducted to change the mechanical properties. The release of the elastic deformation energy after cold working is help to get the low modulus, however, the precipitation of α phase hamper the formation and propagation of the fatigue crack. Recrystallization after cold working could refine the grain size from 100μm to 1～5μm. Cold working after recrystallization absolutely restricts the propagation of the fatigue crack. As a result, the fatigue strength was increased, and the same time, it keeps the low elastic modulus.

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