The Effect of Oxygen Addition on Microstructure and Mechanical Properties of Various Beta-Titanium Alloys

JOM ◽  
2019 ◽  
Vol 72 (4) ◽  
pp. 1656-1663 ◽  
Author(s):  
Sonia Bartáková ◽  
Jaroslav Málek ◽  
Patrik Prachár
Keyword(s):  
Mechanical Properties ◽  
Titanium Alloys ◽  
Microstructure And Mechanical Properties ◽  
Beta Titanium ◽  
Oxygen Addition ◽  
Effect Of Oxygen ◽  
Beta Titanium Alloys

Effect of boron and carbon addition on microstructure and mechanical properties of metastable beta titanium alloys

2015 ◽  
Vol 67 ◽  
pp. 50-63 ◽  
Author(s):  
Ravinaik Banoth ◽  
Rajdeep Sarkar ◽  
Amit Bhattacharjee ◽  
T.K. Nandy ◽  
G.V.S. Nageswara Rao
Keyword(s):  
Mechanical Properties ◽  
Titanium Alloys ◽  
Carbon Addition ◽  
Microstructure And Mechanical Properties ◽  
Beta Titanium ◽  
Metastable Beta ◽  
Beta Titanium Alloys

scholarly journals THE EFFECT OF DIFFERENT FORMS OF OXYGEN ON PROPERTIES OF BETA TITANIUM ALLOYS

2018 ◽  
Vol 58 (3) ◽  
pp. 179 ◽  
Author(s):  
Jaroslav Málek ◽  
František Hnilica ◽  
Sonia Bartáková ◽  
Patrik Míka ◽  
Jaroslav Veselý
Keyword(s):  
Mechanical Properties ◽  
Solid Solution ◽  
Titanium Alloys ◽  
Titanium Powder ◽  
Aerospace Industry ◽  
Weight Ratio ◽  
High Strength ◽  
Beta Titanium ◽  
Oxide Particles ◽  
Beta Titanium Alloys

The beta-titanium alloys are widely used in many applications (medicine, aerospace industry etc.) due to their superior properties, such as corrosion resistance, biocompatibility and high strength to weight ratio. One of the ways how to increase the strength of those alloys is the addition of oxygen. The oxygen can be present in various forms in the alloy – in a solid solution or in the form of oxides. In this work, the effect of two forms of oxygen (i.e., solid solution and dispersion particles) was studied. Two alloys, one arc melted with different oxygen additions and one prepared via powder metallurgy where the titanium powder was oxidized, were prepared. The microstructure and mechanical properties were studied. A significant increase in strength with increasing the oxygen content in the solid solution has been observed. However, the powder oxidation has almost no effect on a tensile strength probably due to quite large interparticle distances between titanium oxide particles.

High Performance Beta Titanium Alloys as a New Material Perspective for Cardiovascular Applications

2012 ◽  
Vol 706-709 ◽  
pp. 578-583 ◽  
Author(s):  
Frédéric Prima ◽  
F. Sun ◽  
Philippe Vermaut ◽  
Thierry Gloriant ◽  
D. Mantovani ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Titanium Alloys ◽  
Metal Ion ◽  
High Performance ◽  
Mechanical Twinning ◽  
High Yield ◽  
Dislocation Slip ◽  
Beta Titanium ◽  
Beta Titanium Alloys

During the last few decades, titanium alloys are more and more popular and developed as biomedical devices because of their excellent biocompatibility, very good combination of mechanical properties and prominent corrosion resistance [1-3]. Recently, a new generation of beta titanium alloys dedicated to biomedical applications has been developed. Based on biocompatible alloying elements such as Ta, Nb, Zr and Mo, these alloys were designed as low modulus alloys [4] or nickel-free superelastic materials [5, 6] mainly for orthopedic or dental applications as osseointegrated implants. Beta type titanium alloys take great advantages from their capacity to display several deformation mechanisms as a function of beta phase stability. Therefore, from low to high beta stability, stress assisted martensitic phase transformation (β-α’’), mechanical twinning or simple dislocation slip can alternatively be observed [7]. As a consequence, a very large range of mechanical properties can be reached, including low apparent modulus, large reversible elastic deformation or high yield stress. Although titanium alloys display now a long history of successful applications in orthopedic and dental devices, none of them have been commercially exploited in the area of coronary stents, despite their superior long term haemocopatibility compared to the 316L stainless steel. However, according to previous researches on the biocompatibility of various metals, the corrosion behavior of stainless steel is dominated by its nickel and chromium components, which may induce redox reaction, hydrolysis and complex metal ion–organic molecule binding reactions, whereas none are observed with titanium [8, 9].

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