scholarly journals Fatigue Behavior of Friction Stir Welded Lap Joints for Dissimilar AA7150-AA2524 Aluminum Alloy

2020 ◽  
Vol 751 ◽  
pp. 012086
Author(s):  
A Chen ◽  
W F Zang ◽  
D K Dong ◽  
Y Z Gong
Keyword(s):  
Aluminum Alloy ◽  
Fatigue Behavior ◽  
Lap Joints ◽  
Friction Stir

Fatigue behavior of dissimilar friction stir welded T-lap joints between AA5083 and AA7075

2021 ◽  
Vol 145 ◽  
pp. 106090
Author(s):  
Hao Dinh Duong ◽  
Masakazu Okazaki ◽  
Tra Hung Tran
Keyword(s):  
Fatigue Behavior ◽  
Lap Joints ◽  
Friction Stir

scholarly journals Investigation of the nugget zone corrosion behavior in friction stir welded lap joints of 6061-T6 aluminum alloy

2014 ◽  
Vol 17 (6) ◽  
pp. 1563-1574 ◽  
Author(s):  
Farhad Gharavi ◽  
Khamirul Amin Matori ◽  
Robiah Yunus ◽  
Norinsan Kamil Othman
Keyword(s):  
Aluminum Alloy ◽  
Corrosion Behavior ◽  
Lap Joints ◽  
Nugget Zone ◽  
Friction Stir

Microstructure and Joint Strength of Similar- and Dissimilar Lap Joints Fabricated by Several Advanced Solid-State Welding Methods

2010 ◽  
Vol 654-656 ◽  
pp. 596-601 ◽  
Author(s):  
Shinji Kumai ◽  
Mitsuhiro Watanabe ◽  
Keyan Feng
Keyword(s):  
Aluminum Alloy ◽  
Solid State ◽  
High Speed ◽  
Joint Strength ◽  
Lap Joints ◽  
Back Surface ◽  
Magnetic Pulse ◽  
Oblique Collision ◽  
Friction Stir ◽  
Steel Sheets

Both similar- and dissimilar metal joints, which are difficult to be welded by using ordinary fusion welding methods, were successfully obtained by using several advanced high-speed solid-state joining methods. (1) Al/Al, Cu/Cu, Al/Fe(Steel), Al/Cu, Al/Ni, Cu/Ni and Al/Bulk metallic glass lap joints were magnetic pulse welded by means of mutual high-speed oblique collision of metal sheets at a high speed of about 500m/s. (2) 2xxx aluminum alloy pins were stud-welded to 5xxx alloy aluminum sheets and several kinds of plated steel sheets at a high speed by using a specially designed discharge circuit. The welding was achieved within a few milliseconds without producing any weld marks on the back surface of the plate. (3) 6022 aluminum alloy sheets were friction stir spot welded to steel sheets and various kinds of galvanized and aluminum-plated steel sheets. The welding was achieved within a few seconds. For those joints, joint strength and characteristic joint interface morphology were investigated.

scholarly journals Fatigue Behavior of Conventional and Stationary Shoulder Friction Stir Welded EN AW-5754 Aluminum Alloy Using Load Increase Method

Metals ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 1510
Author(s):  
Abootorab Baqerzadeh Chehreh ◽  
Michael Grätzel ◽  
Jean Pierre Bergmann ◽  
Frank Walther
Keyword(s):  
Aluminum Alloy ◽  
Fatigue Strength ◽  
Aluminum Alloys ◽  
Efficient Method ◽  
Fatigue Behavior ◽  
Friction Stir ◽  
Stationary Shoulder ◽  
Aluminum Sheets ◽  
Load Increase ◽  
Weld Seams

The load increase method, which is highly efficient in rapidly identifying the fatigue performance and strength of materials, is used in this study to investigate friction stir welded (FSW) EN AW-5754 aluminum alloys. Previous investigations have demonstrated the accuracy and efficiency of this method compared to Woehler tests. In this study, it is shown that the load increase method is a valid, accurate and efficient method for describing the fatigue behavior of FSW weld seams. The specimen tests were performed on 2 mm thick aluminum sheets using conventional and stationary tool configurations. It is shown that an increase in fatigue strength of the FSW EN AW-5754 aluminum alloys can be achieved by using the stationary shoulder tool configuration rather than the conventional one.

Effect of friction stir processing conditions on fatigue behavior and texture development in A356-T6 cast aluminum alloy

2015 ◽  
Vol 80 ◽  
pp. 192-202 ◽  
Author(s):  
Akiko Tajiri ◽  
Yoshihiko Uematsu ◽  
Toshifumi Kakiuchi ◽  
Yasunari Tozaki ◽  
Yosuke Suzuki ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Friction Stir Processing ◽  
Fatigue Behavior ◽  
Texture Development ◽  
Cast Aluminum Alloy ◽  
Processing Conditions ◽  
Cast Aluminum ◽  
Friction Stir

Microscale Evaluation of Mechanical Properties and the Interfacial Microstructures of Friction Stir Welded Aluminum Alloy/Stainless Steel Dissimilar Lap Joints

2014 ◽  
Vol 783-786 ◽  
pp. 2786-2791 ◽  
Author(s):  
Tomo Ogura ◽  
Taichi Nishida ◽  
Hidehito Nishida ◽  
Mitsuo Fujimoto ◽  
Akio Hirose
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Aluminum Alloy ◽  
Aluminum Matrix ◽  
Amorphous Layer ◽  
Interfacial Microstructure ◽  
Lap Joints ◽  
Friction Stir ◽  
Microtensile Test ◽  
Alloying Effects

The mechanical properties and interfacial microstructure of slices of friction stir welded aluminum alloy/stainless steel dissimilar lap joints were characterized. In an FSWed A3003 aluminum alloy/SUS304 steel lap joint, the strength on the advancing side was larger than that at the retreating side. TEM observation indicated that a sound joint that fractured at the base metal can be obtained from the stage of the formation of the amorphous layer owing to the mechanical alloying effects before the formation of intermetallic compounds. This lap joining technique was also successfully applied to A6061/T6 aluminum alloy-grooved SUS304 plates. Equiaxed aluminum grains were observed at the interface of the specimen after it was fractured, indicating that the interface deformed only slightly during the microtensile test. It was found that tensile strength of the joint was increased by aging at 433K, considering that precipitation occurred at this temperature. In addition, it was confirmed that the joint heated at 723K for 1.8ks still fractured at the aluminum matrix, assuming that intermetallic layers at the interface would slightly grow in this heating condition.

Fatigue Prediction by Thermographic Method of Aluminum Alloy 6082 Panels: Comparison Between FSW and MIG Welding

2007 ◽  
Vol 23 (04) ◽  
pp. 215-222
Author(s):  
Vincenzo. Crupi ◽  
Alberto. Marinò ◽  
Marco Biot ◽  
Giacomo. Risitanoison
Keyword(s):  
Aluminum Alloy ◽  
Welded Joints ◽  
Fatigue Behavior ◽  
Experimental Tests ◽  
Mig Welding ◽  
Friction Stir ◽  
Traditional Procedure ◽  
Thermographic Analysis ◽  
Good Agreement

This paper focuses on the fatigue behavior of aluminum alloy welded joints, which can represent points of weakness in the ship structure. The traditional methods of fatigue assessment of welded joints have some limitations and are extremely time consuming. The Risitano method, based on thermographic analysis, has been applied to overcome these difficulties by predicting the fatigue behavior of welds. Experimental tests have been carried out to assess and compare the fatigue capability(S-N curves, endurance limits) of different welded joints, obtained by means of friction stir welding (FSW) and metal inert gas (MIG) welding. Fatigue predictions obtained resorting to the thermographic method (TM) show good agreement with those derived from the traditional procedure. Thus, TM proves to be a powerful tool also for the characterization of the kind of welded joints mentioned.

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