Taguchi approach for the optimization of refill friction stir spot welding parameters for AA2198-T8 aluminum alloy

2018 ◽  
Vol 99 (5-8) ◽  
pp. 1927-1936 ◽  
Author(s):  
Camila Caroline de Castro ◽  
Athos Henrique Plaine ◽  
Nelson Guedes de Alcântara ◽  
Jorge Fernandez dos Santos
Author(s):  
Alexandre da Silva Alves ◽  
Levi Mello dos Santos ◽  
Pedro Brito ◽  
Sara Silva Ferreira de Dafé ◽  
Ana Paula de Oliveira Costa

2017 ◽  
Vol 62 (1) ◽  
pp. 443-449 ◽  
Author(s):  
P. Lacki ◽  
A. Derlatka ◽  
T. Gałaczyński

Abstract One of the important parameters of Refill Friction Stir Spot Welding is the so-called basic position of the tool. This is the arrangement of the pin and sleeve which occurs when the tool is plunged into the material. The basic positions can be divided into two categories. In the first category, the sleeve and the pin are above the sheet surface or below sheet surface and in the second category the pin is retracted within the sleeve or protrudes from it. The aim of the work was to test four settings of the basic position, and then determine the best setting of the basic position, without changing the other welding parameters. Joints made of an aluminum alloy 2024-T3 sheet having a thickness of 1.0 mm and an aluminum alloy D16UTW sheet having a thickness of 0.6 mm were analysed. The best setting of the basic position was determined based on assessment of the force carried in shear test, macrostructure and weld face of the joints.


2019 ◽  
Vol 38 (2019) ◽  
pp. 69-75 ◽  
Author(s):  
Zhenlei Liu ◽  
Kang Yang ◽  
Dejun Yan

AbstractRefill friction stir spot welding (RFSSW) was used to join 6061-T6 and 7075-T6 aluminum alloys in this work. Different sheet configurations and welding parameters were used to optimize joint strength. The effect of sleeve plunge depth on the microstructure and mechanical properties of the joints were investigated. The results showed that no defects were obtained when 6061-T6 aluminum alloy was placed as the upper sheet. The lap shear failure load of the joint using 6061-T6 aluminum alloy as the upper sheet was higher than that using 7075-T6 as the upper sheet. The maximum failure load of 12,892 N was attained when using the sleeve plunge depth of 3.6 mm. The joint failed at the upward flowing 7075 near the hook.


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