scholarly journals The effect of friction stir welding tool wear on the weld quality of aluminum alloy AMg5M

2014 ◽  
Author(s):  
Sergei Yu. Tarasov ◽  
Valery E. Rubtsov ◽  
Evgeny A. Kolubaev
Keyword(s):  
Aluminum Alloy ◽  
Friction Stir Welding ◽  
Tool Wear ◽  
Weld Quality ◽  
Friction Stir

scholarly journals Study on Quality Prediction of 2219 Aluminum Alloy Friction Stir Welding Based on Real-Time Temperature Signal

Materials ◽  
2021 ◽  
Vol 14 (13) ◽  
pp. 3496
Author(s):  
Haijun Wang ◽  
Diqiu He ◽  
Mingjian Liao ◽  
Peng Liu ◽  
Ruilin Lai
Keyword(s):  
Aluminum Alloy ◽  
Friction Stir Welding ◽  
Prediction Model ◽  
Real Time ◽  
Support Vector ◽  
Weld Quality ◽  
Prediction Ability ◽  
Friction Stir ◽  
Temperature Signal ◽  
2219 Aluminum Alloy

The online prediction of friction stir welding quality is an important part of intelligent welding. In this paper, a new method for the online evaluation of weld quality is proposed, which takes the real-time temperature signal as the main research variable. We conducted a welding experiment with 2219 aluminum alloy of 6 mm thickness. The temperature signal is decomposed into components of different frequency bands by wavelet packet method and the energy of component signals is used as the characteristic parameter to evaluate the weld quality. A prediction model of weld performance based on least squares support vector machine and genetic algorithm was established. The experimental results showed that, when welding defects are caused by a sudden perturbation during welding, the amplitude of the temperature signal near the tool rotation frequency will change significantly. When improper process parameters are used, the frequency band component of the temperature signal in the range of 0~11 Hz increases significantly, and the statistical mean value of the temperature signal will also be different. The accuracy of the prediction model reached 90.6%, and the AUC value was 0.939, which reflects the good prediction ability of the model.

scholarly journals Evaluation of Usefulness of AlCrN Coatings for Increased Life of Tools Used in Friction Stir Welding (FSW) of Sheet Aluminum Alloy

Materials ◽  
2020 ◽  
Vol 13 (18) ◽  
pp. 4124
Author(s):  
Piotr Lacki ◽  
Wojciech Więckowski ◽  
Grzegorz Luty ◽  
Paweł Wieczorek ◽  
Maciej Motyka
Keyword(s):  
Aluminum Alloy ◽  
Friction Stir Welding ◽  
Tool Wear ◽  
Tool Life ◽  
Physical Vapor Deposition ◽  
Welding Process ◽  
Friction Stir ◽  
Static Tensile ◽  
Joint Quality ◽  
Wear Coating

The study presents the results of examinations of wear in tools made of 1.2344 steel without and with an anti-wear coating in the process of welding overlap joints of sheet metal made of 7075-T6 aluminum alloy using friction stir welding (FSW) technology. A commercial anti-wear AlCrN coating (Balinit® Alcrona Pro by Oerlikon Balzers Coating Poland Sp. z o.o., Polkowice, Poland) was examined, applied using physical vapor deposition (PVD) and used to improve tool life in metalworking processes. Wear tests for the tools were conducted in industrial conditions at specific parameters of the friction stir welding process. Tool wear was evaluated through examination of the tool working surface. The results of the static tensile strength tests and metallographic examinations of the joints were used to evaluate the effect of tool wear and the coating impact on joint quality. The results obtained in the study show that the tool made of 1.2344 steel was intensively worn after the welding of a joint with the length of 200 m, increasing the risk associated with further use of the tool and suggesting the tool’s low durability. The use of the AlCrN coating led to an increase in tool life. The coating limits the process of tool wear and can be used as an anti-wear coating for tools used in the FSW of aluminum alloys.

Experimental Investigation and Optimization of Friction Stir Welding Process - A Review

2014 ◽  
Vol 550 ◽  
pp. 39-47 ◽  
Author(s):  
K.P. Yuvaraj ◽  
B. Senthilkumar
Keyword(s):  
Experimental Investigation ◽  
Friction Stir Welding ◽  
Welded Joint ◽  
Welding Process ◽  
Tool Geometry ◽  
Weld Quality ◽  
Comprehensive Review ◽  
Friction Stir ◽  
Friction Stir Welding Process

Friction stir welding process parameters plays an important role in determining the quality of welded joint. The weld quality of the joint can be assessed in terms of properties such as lack of defects, tensile strength, hardness and desired microstructure. The objective of the friction stir welding process is to obtain a good welded joint with the desired strength and microstructure. This intended to present comprehensive review of application of tool geometry, different process setups computing techniques, design of experiment (DOE) and evolutionary algorithms used to obtain the good weld joint with desired weld quality.

scholarly journals Parametric study of friction stir welding using elastic return

2020 ◽  
Vol 40 (1) ◽  
pp. 7-11
Author(s):  
Mohamed Serier ◽  
Mohamed Berrahou ◽  
Amina Chikh
Keyword(s):  
Aluminum Alloy ◽  
Friction Stir Welding ◽  
Solid State ◽  
Weld Joint ◽  
Parametric Study ◽  
Experimental Tests ◽  
Assembly Process ◽  
Folding Process ◽  
Friction Stir

AbstractAluminum alloy is a very useful material in light manufacturing. Friction stir welding (FSW) is a solid state assembly process that is achievable for this material. This work aims to characterize the quality of the weld joint by an operation of shaping (folding), it aims to study the rate of elastic return in this weld joint after a folding operation. In this context, the elastic return for the folding process has been modeled using experimental tests under optimal welding conditions.

A Study on Grain Size, Mechanical Properties and First Mode of Metal Transfer in Underwater Friction Stir Welded AA5052-O

2018 ◽  
Vol 775 ◽  
pp. 466-472 ◽  
Author(s):  
K. Tejonadha Babu ◽  
S. Muthukumaran ◽  
C. Bharat Kumar
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Aluminum Alloy ◽  
Friction Stir Welding ◽  
Metal Transfer ◽  
Welding Parameters ◽  
Friction Stir ◽  
Second Mode ◽  
Underwater Friction Stir Welding

Friction stir welding (FSW), a new joining process is finding extensive use in the welding of aluminum alloy sheets. The metal transfer modes in the FSW cause the quality of the weld and its properties. The first mode of metal transfer is accomplished by the tool and shoulder, while the second mode occurs around the pin. In the present study, two different welding conditions, which were friction stir welding in the air (CFSW) and underwater friction stir welding (UWFSW) carried out at various welding parameters to weld the AA5052-O aluminum alloy sheets and determine the consequence of the first mode on the tensile strength of welded joints. Considerable grain refinement and enhanced mechanical properties were obtained in UWFSW joints. It Is observed that the first mode affect the tensile strength of the joint, also found that a linear correlation between the first mode and the tensile strength.

Optimizing weld quality of a friction stir welded aluminum alloy

2015 ◽  
Vol 222 ◽  
pp. 188-196 ◽  
Author(s):  
H. Doude ◽  
J. Schneider ◽  
B. Patton ◽  
S. Stafford ◽  
T. Waters ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Weld Quality ◽  
Friction Stir
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