Aerospace applications of beta titanium alloys

JOM ◽  
1994 ◽  
Vol 46 (7) ◽  
pp. 20-23 ◽  
Author(s):  
Rodney R. Boyer
Keyword(s):  
Titanium Alloys ◽  
Aerospace Applications ◽  
Beta Titanium ◽  
Beta Titanium Alloys

ATI 425® Alloy Formability: Theory and Application

2014 ◽  
Vol 783-786 ◽  
pp. 543-548 ◽  
Author(s):  
David Bryan
Keyword(s):  
Titanium Alloys ◽  
Elevated Temperatures ◽  
Thermomechanical Processing ◽  
Nominal Composition ◽  
Aerospace Applications ◽  
Beta Titanium ◽  
Alpha Beta ◽  
Cp Ti ◽  
Product Forms ◽  
Beta Titanium Alloys

ATI 425® Alloy, nominal composition Ti-4.0Al-2.5V-1.5Fe-0.25O, is a new alpha/beta Ti alloy of significant commercial interest as a viable replacement for Ti-6Al-4V, CP-Ti, and other titanium alloys in a variety of aerospace applications. ATI 425® Alloy offers properties comparable to Ti-6Al-4V alloy with significant improvements in formability, both at room and elevated temperatures. The reasons for the improved formability, particularly at low temperatures, are not well understood. The development of a thorough understanding is complicated by the wide array of phases, microstructures, and deformation paths available via thermomechanical processing in alpha/beta titanium alloys. In this paper, theories of strengthening and dislocation mobility in titanium and HCP metals will be reviewed and applied to better understand why ATI 425® Alloy offers a unique combination of strength and formability not obtainable by conventional alpha/beta titanium alloys. Subsequently, the application of the improved formability to a range of product forms including sheet, tubing, and forgings will be discussed.

Obtainment of Beta Titanium Alloys for Aerospace Applications by Powder Metallurgy

2006 ◽  
Author(s):  
E.B. Taddei ◽  
V.A.R. Henriques ◽  
C.A.A Cairo ◽  
C.R.M. Silva
Keyword(s):  
Powder Metallurgy ◽  
Titanium Alloys ◽  
Aerospace Applications ◽  
Beta Titanium ◽  
Beta Titanium Alloys

The International Workshop on Beta Titanium Alloys

JOM ◽  
1994 ◽  
Vol 46 (7) ◽  
pp. 12-13 ◽  
Author(s):  
Rodney R. Boyer
Keyword(s):  
Titanium Alloys ◽  
International Workshop ◽  
Beta Titanium ◽  
Beta Titanium Alloys

Structural and Compositional Characteristics of Isothermal Omega Phase in Beta Titanium Alloys

2016 ◽  
pp. 559-562 ◽  
Author(s):  
Yufeng Zheng ◽  
Talukder Alam ◽  
Robert E.A. Williams ◽  
Soumya Nag ◽  
Rajarshi Banerjee ◽  
...  
Keyword(s):  
Titanium Alloys ◽  
Omega Phase ◽  
Beta Titanium ◽  
Beta Titanium Alloys

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.

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