scholarly journals Friction Stir Spot Welding with Additional Bonding of Thick Sheet Aluminum Joints

Metals ◽  
2019 ◽  
Vol 9 (7) ◽  
pp. 732 ◽  
Author(s):  
Marcel Hatzky ◽  
Antonia Frank ◽  
Stefan Böhm
Keyword(s):  
Aluminum Alloys ◽  
Spot Welding ◽  
Sheet Thickness ◽  
High Strength ◽  
Friction Stir Spot Welding ◽  
Glass Beads ◽  
Welding Parameters ◽  
Thick Sheet ◽  
Friction Stir ◽  
Body Construction

The high-strength aluminum alloys offer great potential for realizing lightweight constructions in car body construction. However, the use of aluminum alloys increases the overall thickness of the material, which poses new challenges for potential joining processes. This paper examines a process combination of friction stir spot welding (FSSW) and bonding for 4 mm EN AW 6082-T6 sheets. For the investigations, adhesive or glass beads were applied between the joining components and then the sheets were welded using FSSW. The analysis shows that the adhesive and the glass beads have a very small influence on the joint formation. The use of glass beads in FSSW with bonding is recommended because less adhesive is displaced from the joint area, which increases the joint strength. The target of obtaining high weld spot strengths without strength-reducing adhesive burn-off could not be achieved because a certain residence time is necessary to form a weld spot with high strength at this sheet thickness in order to sufficiently plasticize the material. Adhesive burn-up cannot be completely avoided. For this reason, it is necessary to weigh up which characteristics are required for the specific application and adjust the welding parameters accordingly.

Experimental Investigation on Refill Friction Stir Spot Welding Process of Aluminum Alloys

2013 ◽  
Vol 345 ◽  
pp. 243-246 ◽  
Author(s):  
Hong Gang Yang ◽  
Hai Jun Yang
Keyword(s):  
Aluminum Alloys ◽  
Spot Welding ◽  
Welding Process ◽  
Friction Stir Spot Welding ◽  
Welding Parameters ◽  
Welding Time ◽  
Welding Quality ◽  
Tensile Shear ◽  
Rotating Speed ◽  
Friction Stir

With the growing demand for lightweight reduction and environment protection, lightweight materials like aluminum and magnesium alloys have been widely applied in the automotive and aerospace industry. Being a solid state welding process, refill friction stir spot welding (RFSSW) is suitable for spot joining lightweight metals. In the present paper, the mechanical properties and microstructure of the RFSSW joints of 6061-T6 aluminum alloys were investigated. The influence of welding parameters, such as plunge depth, rotating speed and welding time, on tensile-shear strength was conducted through experiments. It is found that the tensile-shear strength is increased with the increase of plunge depth, rotating speed and welding time. And welding time is found to be an important key factor which affects welding quality. Research results can provide guidance for welding parameters optimization and welding quality promotion of RFSSW process of aluminum alloys.

Effects of High Speed Tool Rotation in Micro Friction Stir Spot Welding of Aluminum A1100

2014 ◽  
Vol 493 ◽  
pp. 739-742 ◽  
Author(s):  
Ario Sunar Baskoro ◽  
Suwarsono ◽  
Gandjar Kiswanto ◽  
Winarto
Keyword(s):  
Shear Strength ◽  
Spot Welding ◽  
High Speed ◽  
Tool Material ◽  
Friction Stir Spot Welding ◽  
Welding Parameters ◽  
Friction Stir ◽  
Tool Shoulder ◽  
Welding Processes ◽  
Tool Rotation

Technology of Friction Stir Welding (FSW) is a relatively new technique for joining metal. In some cases on Aluminum joining, FSW gives better results compared with the arc welding processes, including the quality of welds and less distortion. The purpose of this study is to analyze the parameters effect of high speed tool rotation onmicro Friction Stir Spot Welding(μFSSW) to theshear strengthof welds. In this case, Aluminum material A1100, with thickness of 0.4 mm was used. Tool material of HSS material was shaped with micro grinding process. The spindle speed was fixed at 30000 rpm. Tool shoulder diameter was 3 mm, and a length of pin was 0.7 mm. The parameter variations used in this study were the variable of pin diameter (1.5 mm, 2.0 mm, and 2.5 mm), a variable ofplunge speed(2 mm/min, 4 mm/min, 6 mm/min), and the variable ofdwell time(2 seconds, 4 seconds, 6 seconds). Where the variation of these parameters will affect to the mechanical properties of welds (as response) was theshear strength.Response Surface Methods(RSM) was used to analyze μFSSW parameters with theshear strengthof welds. From the result of experiment and analysis, it is shown that the important welding parameters in high speed μFSSW process are pin diameter and plunge speed.

Relation between Friction Stir Spot Welding Parameters and Mechanical Properties of High Density Polyethylene/Glass Spheres Polymer Composites

2016 ◽  
Vol 860 ◽  
pp. 49-52 ◽  
Author(s):  
Munir Tasdemir ◽  
Mustafa Kemal Bilici ◽  
Mehmet Kurt
Keyword(s):  
Mechanical Properties ◽  
Polymer Composites ◽  
High Density Polyethylene ◽  
Spot Welding ◽  
Friction Stir Spot Welding ◽  
High Density ◽  
Welding Parameters ◽  
Friction Stir ◽  
Glass Spheres ◽  
Welding Properties

In the present study, we attempt to use powder of glass spheres filler and reinforce material in HDPE to produce composite structure and then evaluate its mechanical properties to study the effect of welding parameters and filler content on mechanical properties of HDPE. The effect of welding parameters (tool rotational speed, the plunge depth and the dwell time) on friction stir spot welding properties of high density polyethylene/glass spheres (hollow) polymer composites sheets was studied.

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