Evaluation of Tensile Strength Behaviour of Friction Stir Welding Joints of Aluminium Alloy with Interlayer

2020 ◽  
pp. 347-357
Author(s):  
Avtar Singh ◽  
Vinod Kumar ◽  
Neel Kanth Grover
Keyword(s):  
Tensile Strength ◽  
Friction Stir Welding ◽  
Aluminium Alloy ◽  
Friction Stir ◽  
Welding Joints

scholarly journals Analysis of the influence of position of welding materials on the FSW seams properties for three dissimilar aluminium alloy

2018 ◽  
Vol 178 ◽  
pp. 03003 ◽  
Author(s):  
Ana Bosneag ◽  
Marius Adrian Constantin ◽  
Eduard Niţu ◽  
Monica Iordache
Keyword(s):  
Friction Stir Welding ◽  
Aluminium Alloy ◽  
Process Parameters ◽  
Arc Welding ◽  
Welding Process ◽  
Dissimilar Materials ◽  
Workpiece Material ◽  
Friction Stir ◽  
Welding Joints ◽  
Welding Materials

Friction Stir Welding, abbreviated FSW is a new and innovative welding process. This welding process is increasingly required, more than traditional arc welding, in industrial environment such us: aeronautics, shipbuilding, aerospace, automotive, railways, general fabrication, nuclear, military, robotics and computers. FSW, more than traditional arc welding, have a lot of advantages, such us the following: it uses a non-consumable tool, realise the welding process without melting the workpiece material, can be realised in all positions (no weld pool), results of good mechanical properties, can use dissimilar materials and have a low environmental impact. This paper presents the results of experimental investigation of friction stir welding joints to three dissimilar aluminium alloy AA2024, AA6061 and AA7075. For experimenting the value of the input process parameters, the rotation speed and advancing speed were kept the same and the position of plates was variable. The exit date recorded in the time of process and after this, will be compared between them and the influence of position of plate will be identified on the welding seams properties and the best position of plates for this process parameters and materials.

Considerations on the Ultimate Tensile Strength of Butt Welds of the EN AW 5754 Aluminium Alloy, Made by Friction Stir Welding (FSW)

2020 ◽  
Vol 1157 ◽  
pp. 38-46
Author(s):  
Victor Verbiţchi ◽  
Radu Cojocaru ◽  
Lia Nicoleta Boțilă ◽  
Cristian Ciucă ◽  
Ion Aurel Perianu
Keyword(s):  
Tensile Strength ◽  
Friction Stir Welding ◽  
Ultimate Tensile Strength ◽  
Tensile Test ◽  
Aluminium Alloy ◽  
Hazardous Substances ◽  
Parent Metal ◽  
Friction Stir ◽  
Test Pieces ◽  
Fsw Parameters

Experiments have been performed for the butt welding of 160 mm x 90 mm x 2 mm sheets of EN AW 5754 aluminium alloy, where the friction stir welding (FSW) has been used.Referring to the parent metal, the chemical composition and the form of wrought products of the aluminium alloy EN AW 5754 is presented, according to the standard EN 573-1:2005, respectively EN 573-3:2013. The mechanical properties of EN AW-5754 (Al Mg3) sheets are presented, according to EN 485-2:2016. The experiments have been conducted on the own equipment for friction stir welding, type FSW-4kW-10kN, to execute 8 (eight) FSW test pieces, according to EN ISO 25239-4. A quenched FSW tool, own-made of C 45 grade steel, EN 10083, has been used. The parameters of the FSW tests are shown. As main parameters, the rotational speed of the FSW tool was in the range n = 800 – 1200 rev/min, respectively the travel speed was in the range v = 50 – 200 mm/min. The run of the joining experiments is described and the joining test pieces are presented in figures. The ultimate tensile strength of the parent metal (σmin,pm) is based on the specified minimum tensile strength of the ”O” condition of the parent material, respectively this value is also required for the weld, that is σmin,w = 190 MPa. The specimens T1.0, T1.1, T2.1, T2.2, T3.1, T3.2, T4.1, T4.2, T5.1, T5.2 și T6.1 are adequate and accepted by this tensile test. The specimens T1.2, T6.2, T7.1, T72. and T8.1 can be accepted, if higher properties are achieved with a full postweld treatment. Another possibility is a lower extent of the minimum tensile strength of the weld that shall be in accordance with another design specification, for example σmin,w = 145 MPa. By the correlation of the FSW parameters with the results of the tensile test, the ranges for the main parameters with adequate values of the ultimate tensile strength are established: n = 800 – 1000 rev/min and v = 50 – 100 mm/min. By the conclusions, the main aspects of the execution of the FSW test pieces, as well as the results of the tensile tests are selected. The involved industrial areas of the applications are: electro-technique, electronics, manufacturing, shipbuilding and automotive industries. The FSW process is ecological, because it neither uses, nor produces hazardous substances. The references consist of 12 titles.

scholarly journals Effect of Carbonitriding on Tribomechanical and Corrosion-Resistant Properties of Friction Stir Welded Aluminium 2024 Alloy

2021 ◽  
Vol 71 (2) ◽  
pp. 199-212
Author(s):  
Priya ◽  
Gupta Manoj Kumar ◽  
Patel Vinay Kumar
Keyword(s):  
Tensile Strength ◽  
Friction Stir Welding ◽  
Impact Strength ◽  
Aluminium Alloy ◽  
Corrosion Resistant ◽  
Friction Stir ◽  
2024 Alloy ◽  
Pre Treatment ◽  
The Sacrifice ◽  
Al 2024

Abstract Friction stir welding (FSW) is extensively used to join aluminium alloys components in space and aircraft industries. Al 2024 is a heat-treatable aluminium alloy with copper as the primary alloying element which has good strength and fatigue resistance. This paper investigates the effect of carbonitriding surface modification on the hardness, tensile strength and impact strength of FSW welded Al 2024 joints. The friction stir welding was performed on three different sets of aluminium alloy (Al2024:Al2024, Al2024: carbonitrided-Al2024, carbonitrided-Al2024: carbonitrided-Al2024) at two different tool rotation speed (TRS) and two welding speed using cylindrical pin tool. The carbonitriding pre-treatment of Al-2024 alloy demonstrated significant improvement in the tensile strength, percentage elongation, abrasion wear resistance and corrosion resistance with the sacrifice of impact strength. The maximum tensile strength of all three sets of samples after FSW was recorded in descending order of (i) carbonitrided-Al2024:carbonitrided-Al2024 (ii) Al2024:Carbonitrided-Al2024 and (iii) Al2024:Al2024. The friction stir welded joint of carbonitrided aluminium alloy exhibited best abrasive wear resistant and corrosion resistant properties.

scholarly journals Parameters Optimization of Dissimilar Friction Stir Welding for AA7079 and AA8050 through RSM

2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
M. Kavitha ◽  
V. M. Manickavasagam ◽  
T. Sathish ◽  
Bhiksha Gugulothu ◽  
A. Sathish Kumar ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Friction Stir Welding ◽  
Aluminium Alloy ◽  
Engineering Application ◽  
Parameters Optimization ◽  
Friction Stir ◽  
Tool Shoulder ◽  
Dissimilar Friction Stir Welding ◽  
Constituent Elements ◽  
Tool Pin

Aluminium alloy is widely used in engineering application, and it can be classified based on the constituent elements or alloying elements. Aluminium alloy is preferred for the nature of its tensile strength, ductility, and corrosion resistance in this research to make a dissimilar friction stir welding joint of aluminium alloys 7079 and 8050 materials. The tensile strength of the weld joint is estimated by the influence of the response surface methodology approach. The welding is carried out by preferred process parameters with a tool speed of 1000–2500 rpm, tool pin diameter of 2–6 mm, welding speed of 50–300 mm/min, and tool shoulder diameter of 10–20 mm. The ANOVA analysis and the prediction of tensile strength were conducted efficiently. From the RSM analysis, the tool pin diameter mostly modified the output of the result.

Optimization and Mechanical Characterization of AA5083 and AA7075 Dissimilar Aluminium Alloy Joints Produced by Friction Stir Welding

2021 ◽  
Vol 13 (3) ◽  
Author(s):  
S. Rajeshkannan ◽  
M. Vigneshkumar ◽  
V. Gopal ◽  
S. Ramesh
Keyword(s):  
Tensile Strength ◽  
Friction Stir Welding ◽  
Aluminium Alloy ◽  
Axial Force ◽  
Welding Speed ◽  
Rotational Speed ◽  
Frictional Heat ◽  
Friction Stir ◽  
Welding Method ◽  
The Impact

In this research work the aluminium alloys including AA7075 and AA5083 are combined with friction stir welding method. This contrasts with factors such as alloy segregation, hot cracking and porosity which result from fusion welding process in the welded area. In order to generate high quality joint of aluminium alloy, friction-stir welding (FSW) an assuring welding method is followed. To achieve the determined strength, an entire control over the relevant process is needed to increase the tensile vitality. The welding factors like welding speed (WS), axial force (AF) and rotational speed (RS) are examined for optimisation. In order to measure the impact of the factors on tensile strength of FS welded joints, Taguchi L9 orthogonal array technique is employed. The amount of involvement of these factors on weld quality is determined by means of analysis of variance (ANOVA). The utmost ultimate tensile strength (UTS) attained for AA7075 and AA5083 joint is 256MPa. ANOVA results show that the quality-wise effectiveness of the weld as welding speed (5.48percent), axial force (15.18percent), then the rotational speed (79.32percent). This is due to the presence of fine equiaxed grains in the microstructures of the stir zones at different FS welding circumstances. However, a decrease in the grain size of the process zone is observed when the frictional heat flow is decreased while friction-stir welding.

Welding speed effect on joint properties in air and immersed friction stir welding of AA2014

2017 ◽  
Vol 231 (5) ◽  
pp. 897-909 ◽  
Author(s):  
Nilesh D Ghetiya ◽  
Kaushik M Patel
Keyword(s):  
Tensile Strength ◽  
Friction Stir Welding ◽  
Welding Speed ◽  
Heat Input ◽  
Nugget Zone ◽  
Friction Stir ◽  
Maximum Tensile Strength ◽  
Joint Properties ◽  
Welding Joints ◽  
Speed Effect

In immersed friction stir welding, the workpiece is fully immersed in the water during welding. This work illustrates the effect of welding speed on mechanical properties and microstructure. Friction stir welding joints were produced using AA2014-T6 at different welding speeds ranging from 80 to 125 mm/min with constant rotational speed of 1000 r/min in air and immersed water conditions. Results revealed that with an increase in welding speed, the tensile strength of joint increased, this is due to a reduction in heat input while using both air and immersed friction stir welding, which in turn reduces the dissolution of strengthening precipitates. Microstructure result showed that grain size decreased with an increase in welding speed due to less heat input at increased welding speed. The dissolution of strengthening precipitates weakened with an increase in welding speed in both air and immersed friction stir welding, leading to an increase in hardness value at the nugget zone. Maximum tensile strength was obtained at a welding speed of 100 mm/min in immersed friction stir welding and was around 17% higher compared with a maximum tensile strength obtained using air friction stir welding.

scholarly journals Effect of Tool Offset on the Microstructure and Properties of AA6061/AZ31B Friction Stir Welding Joints

Metals ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 546 ◽  
Author(s):  
Huachen Liu ◽  
Yikun Chen ◽  
Zhenhua Yao ◽  
Feixiang Luo
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Friction Stir Welding ◽  
Intermetallic Compounds ◽  
Joint Strength ◽  
Friction Stir ◽  
Tool Offset ◽  
Maximum Value ◽  
Welding Joints ◽  
Az31b Alloy

Friction stir welding was carried out on AA6061/AZ31B alloy, and the influence of tool offset on microstructures and mechanical properties of the joints was studied. The results showed that preferred properties were obtained when Mg was placed in the Advancing Side (AS) and offset was positioned into Mg. The distribution of Al3Mg2 and Al12Mg17 intermetallic compounds (IMCs) could be improved with offset in a certain range. The tensile strength of the joints was elevated with the increase of the offset due to the superior distribution and diminished size of IMCs, and when the offset was 1.5 mm, the joint strength reached the maximum value of 107 MPa. The microhardness of the stirring zone decreased with the increased offset.

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