Thermo-Mechanical Modeling of Friction Stir Welding of High Strength Aluminum Alloy 7075 T651

2019 ◽  
pp. 45-52
Author(s):  
Md. Parwez Alam ◽  
Amar Nath Sinha
Keyword(s):  
Aluminum Alloy ◽  
Friction Stir Welding ◽  
High Strength ◽  
Mechanical Modeling ◽  
Friction Stir ◽  
High Strength Aluminum Alloy ◽  
Aluminum Alloy 7075

Effect of Welding Parameters on AA8090 Al-Li Alloy FSW T-Joints

2013 ◽  
Vol 554-557 ◽  
pp. 985-995 ◽  
Author(s):  
Enrico Lertora ◽  
Chiara Mandolfino ◽  
Carla Gambaro
Keyword(s):  
Aluminum Alloy ◽  
Friction Stir Welding ◽  
High Strength ◽  
Welding Parameters ◽  
T Joints ◽  
Friction Stir ◽  
High Strength Aluminum Alloy ◽  
Welding Technology

In aeronautics and aerospace construction, whenever a seam is needed between aluminum alloy parts, riveting, nailing or bolting are the preferred methods of junction. Friction stir welding technology has made possible the realization of high strength aluminum alloy joints, which are normally considered non-weldable with conventional welding techniques.

On the problem of tool destruction when obtaining fixed joints of thick-walled aluminum alloy blanks by friction welding with mixing

2021 ◽  
Vol 23 (3) ◽  
pp. 72-83
Author(s):  
Kirill Kalashnikov ◽  
◽  
Andrey Chumaevskii ◽  
Tatiana Kalashnikova ◽  
Aleksey Ivanov ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Friction Stir Welding ◽  
Friction Welding ◽  
Welding Process ◽  
High Strength ◽  
Heterogeneous Structure ◽  
Adhesive Interaction ◽  
Friction Stir ◽  
Tool Shoulder ◽  
Electric Erosion

Introduction. Among the technologies for manufacturing rocket and aircraft bodies, marine vessels, and vehicles, currently, more and more attention is paid to the technology of friction stir welding (FSW). First of all, the use of this technology is necessary where it is required to produce fixed joints of high-strength aluminum alloys. In this case, special attention should be paid to welding thick-walled blanks, as fixed joints with a thickness of 30.0 mm or more are the target products in the rocket-space and aviation industries. At the same time, it is most prone to the formation of defects due to uneven heat distribution throughout the height of the blank. It can lead to a violation of the adhesive interaction between the weld metal and the tool and can even lead to a destruction of the welding tool. The purpose of this work is to reveal regularities of welding tool destruction depending on parameters of friction stir welding process of aluminum alloy AA5056 fixed joints with a thickness of 35.0 mm. Following research methods were used in the work: the obtaining of fixed joints was carried out by friction welding with mixing, the production of samples for research was carried out by electric erosion cutting, the study of samples was carried out using optical metallography methods. Results and discussion. As a result of performed studies, it is revealed that samples of aluminum alloy with a thickness of 35.0 mm have a heterogeneous structure through the height of weld. There are the tool shoulder effect zone and the pin effect zone, in which certain whirling of weld material caused by the presence of grooves on tool surface is distinctly distinguished. It is shown that the zone of shoulders effect is the most exposed to the formation of tunnel-type defects because of low loading force and high welding speeds. It is revealed that tool destruction occurs tangentially to the surface of the tool grooves due to the high tool load and high welding speeds.

Intergranular Corrosion Following Friction Stir Welding of Aluminum Alloy 7075-T651

CORROSION ◽  
1999 ◽  
Vol 55 (12) ◽  
pp. 1127-1135 ◽  
Author(s):  
J. B. Lumsden ◽  
M. W. Mahoney ◽  
G. Pollock ◽  
C. G. Rhodes
Keyword(s):  
Aluminum Alloy ◽  
Friction Stir Welding ◽  
Intergranular Corrosion ◽  
Friction Stir ◽  
Aluminum Alloy 7075
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