Morphology and Crystallography of Precipitates Nucleated at Grain Boundary Triple Line in a Two Phase Stainless Steel and a β Titanium Alloy

1999 ◽  
Vol 63 (9) ◽  
pp. 1165-1174 ◽  
Author(s):  
Hiroshi Fujiwara ◽  
Taichi Maeda ◽  
Kei Ameyama
Keyword(s):  
Stainless Steel ◽  
Titanium Alloy ◽  
Grain Boundary ◽  
Triple Line ◽  
Beta Titanium Alloy ◽  
Two Phase ◽  
Beta Titanium ◽  
Boundary Triple

Characterization of precipitates of Ti3Al in a titanium alloy

1996 ◽  
Vol 54 ◽  
pp. 1008-1009
Author(s):  
X.D. Zhang ◽  
J.M.K. Wiezorek ◽  
D.J. Evanst ◽  
H.L. Fraser
Keyword(s):  
Titanium Alloy ◽  
High Temperature ◽  
Aircraft Engine ◽  
Alpha Phase ◽  
Microstructural Stability ◽  
Beta Titanium Alloy ◽  
Two Phase ◽  
Beta Titanium ◽  
Alpha Beta

A two phase alpha-beta titanium alloy, Ti-6Al-2Mo-2Cr-2Sn-2Zr-0.2Si (Ti-6-22-22S), has recently been reconsidered as a high temperature material for aircraft engine applications. This alloy exhibits specific strength and fracture toughness superior to those of Ti-6A1-4V. However, similar to other alpha-beta titanium alloys, microstructural stability is one of the major concerns regarding industrial application of Ti-6-22-22S, since changes of the microstructure during long term high temperature exposure significantly affect the performance of components. Two types of precipitates have been observed in Ti-6-22-22S alloys, namely silicides and alpha 2-Ti3Al. The presence of intermetallic precipitates, such as alpha 2-Ti3Al, in the parent alpha matrix has been reported to result in brittle behaviour of the alpha-beta alloys due to the formation of intense planar slip bands. The present paper presents results of the characterization of intermetallic alpha2-Ti3Al precipitates in the alpha phase by methods of scanning and transmission electron microscopy (SEM and TEM respectively).

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.

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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