An Evaluation of Beta Titanium Alloys for Use in Orthodontic Appliances

1979 ◽  
Vol 58 (2) ◽  
pp. 593-599 ◽  
Author(s):  
Jon Goldberg ◽  
Charles J. Burstone
Keyword(s):  
Stainless Steel ◽  
Titanium Alloy ◽  
Titanium Alloys ◽  
Mechanical Tests ◽  
Orthodontic Appliances ◽  
Beta Titanium Alloy ◽  
Reduction In Force ◽  
Beta Titanium ◽  
Fold Reduction ◽  
Beta Titanium Alloys

A beta titanium alloy was evaluated for use in orthodontic appliances. Standard mechanical tests and a specially designed spring test were used. Two particular thermo-mechanical treatments resulted in titanium springs with 1.8 times the extension of comparable stainless steel springs, and a 2.2 fold reduction in force per unit displacement.

Mechanical Behaviour of Beta Titanium Alloys

2021 ◽  
Vol 1016 ◽  
pp. 964-970
Author(s):  
Nageswara Rao ◽  
Geetha Manivasagam
Keyword(s):  
Heat Treatment ◽  
Titanium Alloys ◽  
Dynamic Properties ◽  
Solution Treatment ◽  
Weight Ratio ◽  
High Strength ◽  
Static Properties ◽  
Beta Titanium Alloy ◽  
Beta Titanium ◽  
Beta Titanium Alloys

Beta titanium alloys have several attractive features; this has resulted in this group of alloys receiving much attention since 1980’s. Among the attributes which distinguish them for their superiority over other structural materials are (i) high strength to which they can be heat treated, resulting in high strength to weight ratio (ii) high degree of hardenability which enables heat treatment in large section sizes to high strength levels (iii) excellent hot and cold workability, making them as competitive sheet materials etc. The standard heat treatment consists of solution treatment in beta or alpha plus beta phase field followed by aging. However, certain aging treatments can render the materials in a state of little or no ductility; the designer has to be aware of this behaviour and has to keep away from such treatments while working with the materials. Such unfavourable aging treatments may adversely affect not only the static properties such as reduction in area and elongation in a tensile test, but also dynamic properties such as impact toughness. Results of fractographic studies are in line with those of mechanical testing. The authors would present the foregoing analysis, based primarily on the wide-ranging researches they carried out on beta titanium alloy Ti15-3 and to some extent data published by researchers on other grades of beta titanium alloys. An attempt is made to explain the mechanisms underlying the embrittlement reactions that take place in beta titanium alloys under non-optimal aging treatments.

scholarly journals Properties of Novel High Temperature Titanium Alloys for Aerospace Applications

2020 ◽  
Vol 321 ◽  
pp. 04006
Author(s):  
John Mantione ◽  
Matias Garcia-Avila ◽  
Matthew Arnold ◽  
David Bryan ◽  
John Foltz
Keyword(s):  
Elevated Temperature ◽  
Titanium Alloys ◽  
Creep Resistance ◽  
Engine Performance ◽  
Beta Titanium Alloy ◽  
Elevated Temperature Strength ◽  
Jet Engine ◽  
Beta Titanium ◽  
Alpha Beta ◽  
Beta Titanium Alloys

The attractive combination of strength and low density has resulted in titanium alloys covering 15 to 25% of the weight of a modern jet engine, with titanium currently being used in fan, compressor and nozzle components. Typically, titanium alloys used in jet engine applications are selected from the group of near alpha and alpha-beta titanium alloys, which exhibit superior elevated temperature strength, creep resistance and fatigue life compared to typical titanium alloys such as Ti-6Al-4V. Legacy titanium alloys for elevated temperature jet engine applications include Ti-5Al-2Sn-2Zr-4Mo-4Cr, Ti-6Al-2Sn-4Zr-2Mo-0.1Si and Ti-4Al-4Mo-2Sn-0.5Si. Improving the mechanical behavior of these alloys enables improved component performance, which is crucial to advancing jet engine performance. As a world leader in supplying advanced alloys of titanium, nickel, cobalt, and specialty stainless steels, ATI is developing new titanium alloys with improved elevated temperature properties. These improved properties derive from precipitation of secondary intermetallics in alpha-beta titanium alloys. ATI has developed several new alpha-beta titanium alloy compositions which exhibit significantly improved elevated temperature strength and creep resistance. This paper will focus on the effects of chemistry and heat treat conditions on the microstructure and resulting elevated temperature properties of these new aerospace titanium alloys.

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].

Microstructure and Texture in an Alpha/Beta Titanium Alloy and their Impact on Mechanical Response

2007 ◽  
Vol 539-543 ◽  
pp. 3589-3594
Author(s):  
W.J. Evans ◽  
F.R. Eng
Keyword(s):  
Titanium Alloy ◽  
Strain Rate ◽  
Titanium Alloys ◽  
Plane Strain ◽  
Basal Plane ◽  
Mechanical Response ◽  
Beta Titanium Alloy ◽  
Beta Titanium ◽  
Strain And Strain Rate ◽  
Alpha Beta

The paper explores texture in the titanium alloys Ti-6-4 and Ti 550. It illustrates how texture evolves under plane strain compression in Ti-6-4. This evolution is dependent on temperature, degree of reduction (strain) and strain rate. Rolled (Ti-6-4) and forged (Ti 550) variants with different textures are then examined under tension and torsion loading in relation to their monotonic and fatigue response. Correlation of the observations with regard to orientation of the basal plane is demonstrated.

Ti-6Al-4V

Alloy Digest ◽  
1992 ◽  
Vol 41 (9) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Titanium Alloy ◽  
High Temperature ◽  
Titanium Alloys ◽  
Heat Treating ◽  
Zero Temperature ◽  
Beta Titanium Alloy ◽  
Temperature Performance ◽  
Beta Titanium ◽  
Alpha Beta

Abstract Ti-6A1-4V and its modification Ti-6A1-4V ELI are moderately age-hardenable titanium alloys, the latter containing extra low interstitials to impart additional toughness at sub-zero temperature. This alloy is the most widely used of all titanium alloys and a great wealth of data exists. Ti-6A1-4V is characterized as an alpha rich alpha-beta titanium alloy. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as creep. It also includes information on low and high temperature performance, and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Ti-66. Producer or source: Timet. Originally published July 1972, revised September 1992.

ALLVAC 6Al-6V-2Sn

Alloy Digest ◽  
1991 ◽  
Vol 40 (8) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Titanium Alloy ◽  
Physical Properties ◽  
Tensile Properties ◽  
Heat Treating ◽  
Beta Titanium Alloy ◽  
Beta Titanium ◽  
Stabilizing Effect ◽  
Alpha Beta

Abstract ALLVAC 6A1-6V-2Sn is a highly beta stabilized alpha + beta titanium alloy, a modification of the 6 A1-4V system. Added vanadium plus copper and iron produce the stabilizing effect. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as creep. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Ti-98. Producer or source: Teledyne Allvac.

UNS R54620

Alloy Digest ◽  
1987 ◽  
Vol 36 (7) ◽  
Keyword(s):  
Titanium Alloy ◽  
High Temperature ◽  
Time Use ◽  
Temperature Stability ◽  
High Strength ◽  
Heat Treating ◽  
High Temperature Stability ◽  
Beta Titanium Alloy ◽  
Beta Titanium ◽  
Long Time

Abstract UNS No. R54620 is an alpha-beta titanium alloy. It has an excellent combination of tensile strength, creep strength, toughness and high-temperature stability that makes it suitable for service to 1050 F. It is recommended for use where high strength is required. It has outstanding advantages for long-time use at temperatures to 800 F. This datasheet provides information on composition, physical properties, elasticity, tensile properties, and bend strength as well as creep. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: Ti-86. Producer or source: Titanium alloy mills.

Coarsening Behavior of an Alpha-Beta Titanium Alloy

2004 ◽  
Author(s):  
S. L. Semiatin ◽  
B. C. Kirby ◽  
G. A. Salishchev
Keyword(s):  
Titanium Alloy ◽  
Beta Titanium Alloy ◽  
Beta Titanium ◽  
Coarsening Behavior ◽  
Alpha Beta
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