Aerospace series. Titanium alloy Ti-6Al-4V. Annealed. Sheet for superplastic forming. a ≤ 6 mm

2013 ◽  
Keyword(s):  
Titanium Alloy ◽  
Superplastic Forming ◽  
Annealed Sheet

Superplastic Forming and Pressure Welding of Multilayer Cellular Structures

2012 ◽  
Vol 735 ◽  
pp. 409-414 ◽  
Author(s):  
Rinat V. Safiullin
Keyword(s):  
Titanium Alloy ◽  
Solid State ◽  
Fatigue Testing ◽  
Superplastic Forming ◽  
Cellular Structures ◽  
Pressure Welding ◽  
Joint Formation ◽  
Academy Of Sciences ◽  
Non Destructive

The paper describes the results of long-term investigations on the development of the technology of superplastic forming and pressure welding (SPF/PW) conducted at the Institute for Metals Superplasticity Problems, Russian Academy of Sciences for producing standard articles of aero-space engineering, such as hollow blades, wing and shell panels. The process of solid state joint formation in titanium alloy sheets during SPF was studied. Different investigation techniques were developed. The results of the mechanical and fatigue testing as well as non-destructive inspection of hollow blades are presented. The prospects of the development of the SPF/PW technology are considered and the latest results are discussed.

Modelling of superplastic forming of hollow structures with goffered filler made of VT6 titanium alloy

2012 ◽  
Vol 43 (9) ◽  
pp. 786-788 ◽  
Author(s):  
R.V. Safiullin ◽  
A.A. Kruglov ◽  
A.Kh. Akhunova ◽  
A.R. Safiullin ◽  
S.V. Dmitriev
Keyword(s):  
Titanium Alloy ◽  
Superplastic Forming ◽  
Hollow Structures

A Study on Gas Pressure for Superplastic Forming of Titanium Alloy Bellows

2005 ◽  
Vol 475-479 ◽  
pp. 3051-3054 ◽  
Author(s):  
Gang Wang ◽  
Jun Chen ◽  
X.Y. Ruan
Keyword(s):  
Titanium Alloy ◽  
Thin Shell ◽  
Deformation Theory ◽  
Shell Theory ◽  
Superplastic Forming ◽  
Gas Pressure ◽  
Forming Process ◽  
Compressive Axial Load ◽  
Thin Shell Theory ◽  
Gas Pressures

The complex superplastic forming (SPF) technology applying gas pressure and compressive axial load is an advanced forming method for bellows made of titanium alloy, which forming process consists of the three main forming phases namely bulging, clamping and calibrating phase. The influence of forming gas pressure in various phases on the forming process are analyzed and models of forming gas pressure for bellows made of titanium alloy are derived according to the thin shell theory and plasticity deformation theory. Using model values, taking a two-convolution DN250 bellows made of Ti-6Al-4V titanium alloy as an example, a series of superplastic forming tests are performed to evaluate the influence of the variation of forming gas pressure on the forming process. According to the experimental results models are corrected to make the forming gas pressures prediction more accurate.

Innovative Superplastic Forming Based on In Situ Infra-Red Sheet Heating

2012 ◽  
Vol 735 ◽  
pp. 415-421 ◽  
Author(s):  
Gerard Bernhart ◽  
Jean Paul Arcens ◽  
Yannick Le Maoult
Keyword(s):  
Titanium Alloy ◽  
Low Cost ◽  
Research Work ◽  
Superplastic Forming ◽  
Pressure Chamber ◽  
Process Route ◽  
Refractory Castables ◽  
Infra Red ◽  
Metallic Sheet

This paper describes the research work that was performed in order to propose an innovative and low cost process route for superplastic forming of aluminum and titanium alloy sheets. The driving idea was to heat only the metallic sheet using heating elements included in the pressure chamber. Several heating configuration have been tested and equipment designs investigated. Based on experimental results and numerical thermal analysis, it was found that halogen heating lamps with a high reflective thermal insulation was the best for the upper pressure chamber, whereas low effusivity Refractory Castables materials seem optimal as low cost forming die. Energy consumption evaluation shows more than 80% energy saving in nominal titanium alloy forming. A pilot forming equipment was developed and first aluminum sheet forming trials give interesting results.

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