Mechanical Performance of Titanium Alloys with Added Lightweight Interstitial Element for Biomedical Applications

2018 ◽  
Vol 941 ◽  
pp. 2458-2464
Author(s):  
Mitsuo Niinomi
Keyword(s):  
Titanium Alloys ◽  
Biomedical Applications ◽  
Mechanical Performance ◽  
Interstitial Element ◽  
Oxygen Addition

Oxygen is considered to be an impurity in titanium and its alloys, and it enhances their brittleness. However, oxygen has also been recognized as a useful ingredient to improve the mechanical performance of titanium alloys for biomedical applications, because oxygen is a lightweight interstitial element that is non-toxic and non-allergenic. Some reports show that adding oxygen improves both the strength and the ductility of titanium alloys for biomedical applications. The effects of oxygen addition on the mechanical performance of titanium alloys for biomedical aplications are described.

scholarly journals Antibacterial Ti-Mn-Cu alloys for biomedical applications

2020 ◽  
Author(s):  
Mohammad Alqattan ◽  
Linda Peters ◽  
Yousef Alshammari ◽  
Fei Yang ◽  
Leandro Bolzoni
Keyword(s):  
Titanium Alloys ◽  
Lamellar Structure ◽  
Biomedical Applications ◽  
Mechanical Performance ◽  
Antibacterial Efficacy ◽  
Medical Implants ◽  
Manufacturing Costs ◽  
Cu Alloys ◽  
Beta Titanium ◽  
Surgical Infections

Abstract Titanium alloys are common biomedical materials due to their biocompatibility and mechanical performance. However, titanium alloys are expensive and, unless surface treated, generally cannot prevent surgical infections related to bacteria which can damage the integrity of the implant. In this study, new titanium alloys were developed via powder metallurgy and the addition of manganese and copper, respectively, aiming to limit the manufacturing costs and induce new functionality on the materials including antibacterial response. The addition of manganese and copper to titanium significantly changes the behaviour of the Ti-Mn-Cu alloys leading to the successful stabilization of the beta titanium phase, great refinement of the typical lamellar structure, and achievement of materials with low level of porosity. Consequently, it is found that the mechanical performance and the antibacterial efficacy are enhanced by the addition of a higher amount of alloying elements. The manufactured Ti-Mn-Cu alloys fulfil the requirements for structural biomedical implants and have antibacterial response making them potential candidates for permanent medical implants.

Research Progress of the Surface Oxidation of Titanium and its Alloys

2013 ◽  
Vol 748 ◽  
pp. 188-191
Author(s):  
Hui Jun Yu
Keyword(s):  
Titanium Alloys ◽  
Biomedical Applications ◽  
Influence Factors ◽  
Surface Oxidation ◽  
Research Progress ◽  
Corrosion Resistant ◽  
Specific Strength ◽  
Existing Problems ◽  
High Specific Strength ◽  
Micro Arc Oxidation

Titanium and titanium alloys possess some attractive properties, such as excellent corrosion and erosion resistance, low densities, high specific strength and modulus, enabling them extensively used in aeronautical, marine, chemical and biomedical applications and so on. Nevertheless, Recent years, the corrosion resistance of titanium and titanium alloys is required to elevate in some fields, proper surface modification such as surface oxidation can solve the problems effectively. In this paper, the recent investigations of thermal oxidation and micro-arc oxidation to improve the corrosion resistant of titanium and its alloys are reviewed. The structures, properties and their influence factors of the coatings are analysed systematically. And the existing problems and the future prospect of the further researches is mentioned.

Thermal Processing of a Titanium Alloy for Aeronautical Applications

2017 ◽  
Vol 907 ◽  
pp. 214-219 ◽  
Author(s):  
Dragoș Cristian Achiței ◽  
Petrică Vizureanu ◽  
Mirabela Georgiana Minciună ◽  
Mustafa Al Bakri Abdullah Mohd ◽  
Andrei Victor Sandu
Keyword(s):  
Titanium Alloys ◽  
Biomedical Applications ◽  
Metastable Phase ◽  
Hardness Measurement ◽  
Heat Treatments ◽  
Low Weight ◽  
Experimental Researches ◽  
Hardening Heat Treatment ◽  
Quenching And Tempering ◽  
Electronic Microscope

The titanium alloys are used in aeronautical applications (up to 75% of titanium alloys), reinforcements, biomedical applications, army industry, because of a high traction resistance, low weight, excellent corrosion resistance and capacity to resist at extreme temperatures. However, some titanium applications are restricted by the small hardness, high friction coefficient and low usage resistance. The paper shows the experimental researches made on Ti-6Al-4V alloy, subjected to quenching and tempering heat treatments. The hardening heat treatment of titanium alloys with α+β structure consists in stabilization phenomenon of β solid solution dissolved in α’ and α’’ metastable phase. After quenching and tempering heat treatments, are obtained good mechanical properties in biphasic alloys, maintaining the plasticity characteristics in reasonable limits. The efficiency evaluation of heat treatments was realized through micro-hardness measurement and structure analyses on electronic microscope.

The environmental stability of boron-containing titanium alloys for biomedical applications

JOM ◽  
2011 ◽  
Vol 63 (6) ◽  
pp. 42-47 ◽  
Author(s):  
Vilupanur A. Ravi ◽  
Shaun Rogers ◽  
Mehnaz Malek ◽  
Daniel Surmenian ◽  
Isaac Priddy ◽  
...  
Keyword(s):  
Titanium Alloys ◽  
Biomedical Applications ◽  
Environmental Stability

scholarly journals Exploration of Nano-scale Structural Instabilities in Metastable β Titanium Alloys Using Advanced Electron Microscopy

2020 ◽  
Vol 321 ◽  
pp. 12001
Author(s):  
Yufeng Zheng ◽  
Dong Wang ◽  
Rajarshi Banerjee ◽  
Dipankar Banerjee ◽  
Yunzhi Wang ◽  
...  
Keyword(s):  
Titanium Alloys ◽  
Mechanical Performance ◽  
Advanced Characterization ◽  
Hexagonal Structure ◽  
Experimental Conditions ◽  
Nano Scale ◽  
Ω Phase ◽  
Transformation Mechanisms ◽  
Structural Instabilities ◽  
O Phase

A variety of nano-scale structural instabilities formed in different metastable β titanium alloys have been systematically investigated using advanced characterization techniques. The characteristics of three different types of nano-scale structural instabilities, the transformation mechanisms and pathways involved and the critical experimental conditions to generate such nano-scale phases will be reviewed and summarized, including athermal ω phase with hexagonal structure, O’ phase with orthorhombic structure, and incommensurate modulated nanodomains. The athermal ω phase has been observed in the as-quenched state in Ti-xMo (x=12, 15 and 181), Ti-18Mo-5Al, Ti-20V, Ti-5Fe, Ti-5Al-5Mo-5V-3Cr (Ti-5553) and Ti-24Nb-4Zr-8Sn (Ti-2448). O’ phase has been characterized to co-exist with athermal ω phase in the as-quenched state isomorphous titanium alloys, including Ti-26Zr-2Al (at.%), Ti-18Mo, Ti-18Mo-5Al, Ti-5553 and Ti-2448. Incommensurate modulated nanodomains were found in compositionally graded Ti-xFe alloy when the athermal ω phase is suppressed. These various nano-scale structural instabilities need to be taken into consideration when designing novel metastable β titanium alloys to optimize the mechanical performance by microstructure engineering.

scholarly journals Sputtered Hydroxyapatite Nanocoatings on Novel Titanium Alloys for Biomedical Applications

10.5772/54263 ◽  
2013 ◽  
Author(s):  
Kun Mediaswanti ◽  
Cuie Wen ◽  
Elena P. ◽  
Christopher C. Berndt ◽  
James Wang
Keyword(s):  
Titanium Alloys ◽  
Biomedical Applications
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