Fracture toughness of structural aluminium alloy thick plate joints by friction stir welding

2006 ◽  
Vol 11 (3) ◽  
pp. 366-370 ◽  
Author(s):  
M. Mochizuki ◽  
M. Inuzuka ◽  
H. Nishida ◽  
K. Nakata ◽  
M. Toyoda
Keyword(s):  
Fracture Toughness ◽  
Friction Stir Welding ◽  
Aluminium Alloy ◽  
Thick Plate ◽  
Friction Stir

Friction stir overlap welding of 2124 Aluminium plate

2010 ◽  
Vol 1 (1) ◽  
pp. 73-84
Author(s):  
Wim Van Haver ◽  
A. Geurten ◽  
B. De Meester ◽  
J. Defrancq
Keyword(s):  
Friction Stir Welding ◽  
Aluminium Alloy ◽  
Welding Speed ◽  
Thick Plate ◽  
Experimental Results ◽  
Processing Route ◽  
Friction Stir ◽  
Fine Grained ◽  
Microstructural Characterisation ◽  
Fine Grained Material

In this ongoing investigation, experimental results of friction stir welding (FSW) applied to highthickness 2124 aerospace aluminium alloy are discussed. Flanges of 30 mm high are produced onto a44 mm thick plate by two consecutive overlap welds in this non-fusion weldable material, followed by a finalmilling step. This approach results in significant material savings compared to the conventional productionroute, which consists of milling out the entire part starting from a high-thickness plate. Furthermore, theflanges built up by FSW consist fully of fine-grained material. Due to the nature of the processing route, thenugget zone of the first weld pass is partially reheated by the second weld pass. The influence of parentmaterial temper (i.e., T851 or T4) on friction stir welding characteristics is studied; it is noted that in T4temper, a significant increase in welding speed can be obtained compared to T851. The softer T4 temperalso causes less danger of tool fracture, which allows incorporating more features to the pin and shoulderof the tool. During this investigation, the emphasis is put on microstructural characterisation andmicrohardness testing of various zones in the weld.

The Friction Stir Welding of Cylindrical Components

2013 ◽  
Vol 554-557 ◽  
pp. 1075-1082
Author(s):  
Carlo Bruni ◽  
Saverio Zitti
Keyword(s):  
Friction Stir Welding ◽  
Aluminium Alloy ◽  
Rotational Velocity ◽  
Tangential Velocity ◽  
Research Activity ◽  
Friction Stir ◽  
Relevant Effect

The present research activity aims at studying different conditions for the circumferential friction stir welding of cylindrical components in aluminium alloy. Different parameters have been considered, such as the rotational velocity of the tool, the tangential velocity of the cylindrical elements and the number of welding passes. The obtained data have been analysed and the strength of each joint modelled. It has been observed a relevant effect of the combination between the rotational velocity of the tool and the tangential velocity of the cylindrical components on the strength of the joint.

Microhardness prediction in friction stir welding of 2014 aluminium alloy

2006 ◽  
Vol 11 (2) ◽  
pp. 178-182 ◽  
Author(s):  
Y.-H. Zhao ◽  
S.-B. Lin ◽  
Z.-Q. He ◽  
L. Wu
Keyword(s):  
Friction Stir Welding ◽  
Aluminium Alloy ◽  
Friction Stir
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