scholarly journals Concurrent solid state diffusion bonding and superplastic forming of aluminum alloy 7475

10.2172/74169 ◽  
1995 ◽  
Author(s):  
A. Sunwoo ◽  
R. Lum ◽  
R. Vandervoort
Keyword(s):  
Aluminum Alloy ◽  
Solid State ◽  
Diffusion Bonding ◽  
Superplastic Forming ◽  
Solid State Diffusion ◽  
State Diffusion

Solid State Diffusion Bonding of Titanium Alloys

2007 ◽  
Vol 124-126 ◽  
pp. 1429-1432 ◽  
Author(s):  
Ho Sung Lee ◽  
Jong Hoon Yoon ◽  
Yeong Moo Yi
Keyword(s):  
Solid State ◽  
Titanium Alloys ◽  
Diffusion Bonding ◽  
Structural Integrity ◽  
High Strength Steels ◽  
Superplastic Forming ◽  
Atomic Diffusion ◽  
Solid State Diffusion ◽  
Hydraulic Test ◽  
State Diffusion

Solid State diffusion bonding is obtained by applying heat, well below the melting temperature of the metals, a static pressure which does not cause a macroscopic plastic deformation in the material, and a time required to form a metallurgical bond with atomic diffusion process. This process is used for aluminum alloys, high strength steels and titanium alloys in the aerospace industry to produce complex and inaccessible joints without localized distortion. Ability to diffusion bond titanium alloys is strongly needed to promote the use of superplastic forming technology. In the present work, the solid state diffusion bonding was carried out using specimens in Ti-6Al-4V and Ti-15V-3Cr-3Sn-3Al. The microstructure of the bonded interface indicates the diffusion bonding process is successful for both alloys. It is also shown that the diffusion bonding of a superplastic Ti-6Al-4V alloy is possible at the optimum superplastic condition so that two processes can be performed simultaneously. The structural integrity of diffusion bonding was evaluated with a hydraulic test of diffusion bonded part.

scholarly journals Effect of Post-Weld Heat Treatment on the Solid-State Diffusion Bonding of 6061 Aluminum Alloy

2021 ◽  
Vol 11 (20) ◽  
pp. 9660
Author(s):  
Chun-Hao Chen ◽  
Yu-Kai Sun ◽  
Yu-Chang Lai ◽  
Shih-Ying Chang ◽  
Tung-Han Chuang
Keyword(s):  
Heat Treatment ◽  
Shear Strength ◽  
Aluminum Alloy ◽  
Solid State ◽  
Diffusion Bonding ◽  
Joint Strength ◽  
Post Weld Heat Treatment ◽  
Solid State Diffusion ◽  
State Diffusion ◽  
Weld Heat

The precipitation-hardenable aluminum alloy 6061 (AA 6061) is favored for aerospace components and automotive parts. However, the tenacious oxide layer on the surface greatly limits the quality and applicability of joining AA 6061. In this study, the joining method of solid-state diffusion bonding was implemented for AA 6061 plates, and the effects of post-weld heat treatment (PWHT) on the joint interface were investigated. The bonding temperatures were within the range of 500–530 °C, and the time periods varied from 30 to 240 min under a static pressure of 5 MPa in a vacuum. The diffusion bonded specimens were subjected to T4- and T6-PWHT to improve the bonding quality. The interfacial microstructure of the joints was analyzed by scanning electron microscopy, and the mechanical properties were evaluated with shear tests. The experimental results showed that the shear strength of the diffusion bonded joint could reach around 71.2 MPa, which was highly dependent on bonding temperature and holding time, and T6-PWHT further enhanced it to over 100 MPa. The effects of PWHT on the diffusion bonded AA 6061 joint were investigated, and the fractography on the sheared surfaces indicated that PWHT-T6 played an important role in enhancing joint strength, which was consistent with the measured shear strength. The sequential PWHT for AA 6061 after diffusion bonding was proven to be feasible for bonding of AA 6061 parts, and the joint strength was sufficient for industrial needs.

Laser properties of Fe2+:ZnSe fabricated by solid-state diffusion bonding

2018 ◽  
Vol 15 (4) ◽  
pp. 045806 ◽  
Author(s):  
S S Balabanov ◽  
K N Firsov ◽  
E M Gavrishchuk ◽  
V B Ikonnikov ◽  
S Yu Kazantsev ◽  
...  
Keyword(s):  
Solid State ◽  
Diffusion Bonding ◽  
Solid State Diffusion ◽  
State Diffusion

Room-temperature lasing on Fe2+:ZnSe with meniscus inner doped layer fabricated by solid-state diffusion bonding

2019 ◽  
Vol 16 (5) ◽  
pp. 055004 ◽  
Author(s):  
S S Balabanov ◽  
K N Firsov ◽  
E M Gavrishchuk ◽  
V B Ikonnikov ◽  
I G Kononov ◽  
...  
Keyword(s):  
Solid State ◽  
Diffusion Bonding ◽  
Room Temperature ◽  
Solid State Diffusion ◽  
State Diffusion

IR laser active elements fabricated by Solid-State Diffusion Bonding

2018 ◽  
Author(s):  
S.S. Balabanov ◽  
K.N. Firsov ◽  
E.M. Gavrishchuk ◽  
V.B. Ikonnikov ◽  
S.Yu. Kazantsev ◽  
...  
Keyword(s):  
Solid State ◽  
Diffusion Bonding ◽  
Solid State Diffusion ◽  
Active Elements ◽  
Ir Laser ◽  
State Diffusion

Modelling solid-state diffusion bonding

1989 ◽  
Vol 37 (9) ◽  
pp. 2425-2437 ◽  
Author(s):  
A. Hill ◽  
E.R. Wallach
Keyword(s):  
Solid State ◽  
Diffusion Bonding ◽  
Solid State Diffusion ◽  
State Diffusion
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