The superplastic forming/diffusion bonding of TA7 titanium alloy for manufacturing hollow structure with stiffeners

2022 ◽  
Vol 73 ◽  
pp. 385-394
Author(s):  
Zhihao Du ◽  
Chunxu Wang ◽  
Qing Liu ◽  
Shan Wang ◽  
Yang Liu ◽  
...  
Keyword(s):  
Titanium Alloy ◽  
Diffusion Bonding ◽  
Hollow Structure ◽  
Superplastic Forming

Advanced superplastic forming and diffusion bonding of titanium alloy

2006 ◽  
Vol 22 (3) ◽  
pp. 343-348 ◽  
Author(s):  
O. A. Kaibyshev ◽  
R. V. Safiullin ◽  
R. Ya. Lutfullin ◽  
O. R. Valiakhmetov ◽  
R. M. Galeyev ◽  
...  
Keyword(s):  
Titanium Alloy ◽  
Diffusion Bonding ◽  
Superplastic Forming ◽  
And Diffusion

Simulation and Experiment Investigation on Superplastic Forming/Diffusion Bonding Process of a Ti-6Al-4V Alloy Rear Fuselage Part

2018 ◽  
Vol 385 ◽  
pp. 407-412
Author(s):  
Gui Qiang Guo ◽  
Dong Sheng Li ◽  
Xiao Qiang Li ◽  
Xuan Zhao Huang
Keyword(s):  
Titanium Alloy ◽  
Double Layer ◽  
Diffusion Bonding ◽  
Layer Structure ◽  
Thickness Distribution ◽  
Superplastic Forming ◽  
Bonding Process ◽  
Double Layer Structure ◽  
Simulation And Experiment

Superplastic forming/diffusion bonding (SPF/DB) process is widely used in aviation titanium alloy parts forming. PAM-STAMP was utilized to simulate the SPF/DB process of a Ti-6Al-4V double layer structure part in rear fuselage at 920°C and reach the thickness distribution of the part. Then the part was formed based on simulation. The thickness distribution of the practical part was measured and compared with the simulation result. The results show that the thickness distributions of practical and simulated part fit well with each other.

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.

scholarly journals Superplastic Forming and Reaction Diffusion Bonding Process of Hollow Structural Component for Mg-Gd-Y-Zn-Zr Rare Earth Magnesium Alloy

Metals ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 152
Author(s):  
Peng Peng ◽  
Shaosong Jiang ◽  
Zhonghuan Qin ◽  
Zhen Lu
Keyword(s):  
Mechanical Properties ◽  
Diffusion Bonding ◽  
Structural Component ◽  
Bonding Temperature ◽  
Reaction Diffusion ◽  
Superplastic Forming ◽  
Tensile Tests ◽  
Interface Roughness ◽  
Size Growth ◽  
Cu Interlayer

This work fabricated a double hollow structural component of Mg-8.3Gd-2.9Y-0.8Zn-0.2Zr alloy by superplastic forming (SPF) and reaction-diffusion bonding (RDB). The superplastic characteristic and mechanical properties of Mg-8.3Gd-2.9Y-0.8Zn-0.2Zr alloy sheets at 250–450 °C were studied. Tensile tests showed that the maximum elongation of tensile specimens was about 1276.3% at 400 °C under a strain rate of 1 × 10−3 s−1. Besides, the effect of bonding temperature and interface roughness on microstructure and mechanical properties of the reaction diffusion-bonded joints with a Cu interlayer was investigated. With the increase of temperature, the diffusion coefficient of Cu increases, and the diffusion transition region becomes wider, leading to tightening bonding of the joint. However, the bonding quality of the joint will deteriorate due to grain size growth at higher temperatures. Shear tests showed that the highest strength of the joints was 152 MPa (joint efficiency = 98.7%), which was performed at 460 °C.

scholarly journals A Review on Diffusion Bonding between Titanium Alloys and Stainless Steels

2018 ◽  
Vol 2018 ◽  
pp. 1-15 ◽  
Author(s):  
De-feng Mo ◽  
Ting-feng Song ◽  
Yong-jian Fang ◽  
Xiao-song Jiang ◽  
Charles Q. Luo ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Titanium Alloy ◽  
Titanium Alloys ◽  
Stainless Steels ◽  
Diffusion Bonding ◽  
Low Cost ◽  
Phase Interface ◽  
Intermetallic Phases ◽  
Voids Growth

High-quality joints between titanium alloys and stainless steels have found applications for nuclear, petrochemical, cryogenic, and aerospace industries due to their relatively low cost, lightweight, high corrosion resistance, and appreciable mechanical properties. This article reviews diffusion bonding between titanium alloys and stainless steels with or without interlayers. For diffusion bonding of a titanium alloy and a stainless steel without an interlayer, the optimized temperature is in the range of 800–950°C for a period of 60–120 min. Sound joint can be obtained, but brittle FeTi and Fe-Cr-Ti phases are formed at the interface. The development process of a joint mainly includes three steps: matching surface closure, growth of brittle intermetallic compounds, and formation of the Kirkendall voids. Growth kinetics of interfacial phases needs further clarification in terms of growth velocity of the reacting layer, moving speed of the phase interface, and the order for a new phase appears. The influence of Cu, Ni (or nickel alloy), and Ag interlayers on the microstructures and mechanical properties of the joints is systematically summarized. The content of FeTi and Fe-Cr-Ti phases at the interface can be declined significantly by the addition of an interlayer. Application of multi-interlayer well prevents the formation of intermetallic phases by forming solid solution at the interface, and parameters can be predicted by using a parabolic diffusion law. The selection of multi-interlayer was done based on two principles: no formation of brittle intermetallic phases and transitional physical properties between titanium alloy and stainless steel.

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
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