Equal-load-bearing joining of alclad AA2024-T4 alloy stringers and skins in aviation via friction stir lap welding

2021 ◽  
Vol 68 ◽  
pp. 1295-1302
Author(s):  
Xiangchen Meng ◽  
Bingqi Cao ◽  
Yang Qiu ◽  
Huizi Chen ◽  
Yuming Xie ◽  
...  
Keyword(s):  
Friction Stir Lap Welding ◽  
Load Bearing ◽  
Friction Stir ◽  
Lap Welding

Dissimilar Friction Stir Lap Welding of AA2198 and AA7075 Sheets: Forces, Microstructure and Mechanical Properties

2021 ◽  
Author(s):  
Antonello Astarita ◽  
Fausto Tucci ◽  
Alessia Teresa Silvestri ◽  
Michele Perrella ◽  
Luca Boccarusso ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Welding Process ◽  
Processing Parameters ◽  
Processing Parameter ◽  
Friction Stir Lap Welding ◽  
Friction Stir ◽  
Lap Shear ◽  
Microstructure And Mechanical Properties ◽  
Lap Welding ◽  
Factorial Design Of Experiments

Abstract This paper deals with the dissimilar friction stir lap welding of AA2198 and AA7075 sheets. The influence of processing parameters, namely welding speed and tool rotational speed on joint features, microstructure, and mechanical properties were investigated implementing a full factorial design of experiments. During the welding process, axial and transversal forces were continuously measured using a dedicated sensed fixture aiming at the correlation of this processing parameter with the quality of the achieved joints. The reported outcomes showed a very narrow processing window in which it was possible to avoid the formation of defects while the formation of an hook was observed for all the joints welded. The influence of the weld bead morphology on the lap shear strength was elucidated proving that the strength is ruled by the hook morphology. A correlation between the process parameters and the forces arising was also attempted. The final microstructure of the joints was studied and explained and also compared with the microhardness results.

Dissimilar friction stir lap welding of AA2198-AA6082: Process analysis and joint characterization

2021 ◽  
Vol 35 ◽  
pp. 753-764
Author(s):  
Fausto Tucci ◽  
Pierpaolo Carlone ◽  
Alessia Teresa Silvestri ◽  
Hetal Parmar ◽  
Antonello Astarita
Keyword(s):  
Process Analysis ◽  
Friction Stir Lap Welding ◽  
Friction Stir ◽  
Lap Welding

Friction Stir Lap Welding of Thin AA6061-T6 and AISI304 Sheets at Different Values of Pin Penetrations

2018 ◽  
Author(s):  
Raju Prasad Mahto ◽  
Surjya K. Pal
Keyword(s):  
Intermetallic Compound ◽  
Joint Strength ◽  
Detrimental Effect ◽  
Steel Substrate ◽  
Weld Strength ◽  
Steel Matrix ◽  
Friction Stir Lap Welding ◽  
Depth Of Penetration ◽  
Friction Stir ◽  
Lap Welding

The present paper focuses on the influence of pin penetration on joint strength achieved in friction stir lap welding between AA6061-T6 and AISI304. Penetration of pin into the steel substrate, which is placed below the aluminium, has an influencing role in achieving a good weld. Beyond a certain depth of penetration of pin into the steel, non-uniform thicker intermetallic compound and the weld defects have been found. Defects were found to be located in the stir zone. Thus, an excessive penetrations of the pin into the steel matrix has been produced a detrimental effect to the weld strength. An optimum penetration of pin has been experimentally found out.

Role of zinc coat in friction stir lap welding Al and zinc coated steel

2008 ◽  
Vol 24 (1) ◽  
pp. 33-39 ◽  
Author(s):  
Y. C. Chen ◽  
T. Komazaki ◽  
T. Tsumura ◽  
K. Nakata
Keyword(s):  
Coated Steel ◽  
Friction Stir Lap Welding ◽  
Friction Stir ◽  
Lap Welding ◽  
Zinc Coated Steel
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