Study the Mechanical Properties and Numerical Evaluation of Friction Stir Processing (FSP) for 6061-T6 Aluminum Alloys (original) (raw)
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Friction stir processing is a new method of changing the properties of a metal through intense, localized plastic deformation ,this process mixes the material without changing the phase (by melting or otherwise) and creates a microstructure with fine, equiaxedgrains, It is used to improve the microstructural properties of metals. In this paper , the enhancement of mechanical propertiesof friction stir welding specimens at variable rotation speeds (1100,1300 and 1500 rpm) with constant feed speed(60mm/min) for 6061-T6 aluminum alloy is studied by using the friction stir processing method at the same variable rotation speed and feed speed in order to transform a heterogeneous microstructure to a more homogeneous, refined microstructure. The best results of the welding line at the parameter 60 mm/min weld speed and 1300RPM rotation speed for the friction stir welding (FSW) and friction stir processing (FSP) where the efficiency reaches to 84.61% for FSW and 89.05% for FSP of the ultimate tensile strength of the parent metal.
Friction stir processing is a new method of changing the properties of a metal through intense, localized plastic deformation ,this process mixes the material without changing the phase (by melting or otherwise) and creates a microstructure with fine, equiaxedgrains , It is used to improve the microstructural properties of metals. In this paper , the enhancement of mechanical properties of friction stir welding specimens at variable rotation speeds (1500,1700 and 1900 rpm) with constant feed speed(40mm/min) for 7075-T73 aluminum alloy is studied by using the friction stir processing method at the same variable rotation speed and feed speed in order to transform a heterogeneous microstructure to a more homogeneous, refined microstructure. The best results of the weld gained at the parameter 40 mm/min weld speed and 1700RPM rotation speed for the friction stir welding (FSW) an d friction stir processing (FSP) where the efficiency reaches to 83.7% for FSW and 92.99% for FSP of the ultimate tensile strength of the parent metal.
Transactions of Nonferrous Metals Society of China, 2015
In this study, friction stir process (FSP) is used to enhance surface properties of the AA6061-T6 alloy. Friction stir process tool travel and rotation speeds effects on the surface topography, hardness, tension mechanical properties and microstructures of Aluminum alloy were studied. The cylindrical tool without pin diameter (20 mm), tool rotational speed (800 rpm) and travel speed (60 rpm) used in all friction stir processes (FSW) in this study. The test results and analysis of the current study indicated that the hardness increases with the cutting depth in the mixing friction processes. The crystal structure analysis revealed that the hardness increased in the case of two stages twice the case of one stage. It was also noted that the size of the engineering flaws granules became smaller and the size of these granules increased with the cutting depth. In addition, the ratio of granules size and the friction in the case of two stages was twice the case of one stage.
— Objective: Friction stir welding (FSW) is a relatively new solid state welding technique for similar and dissimilar materials, especially on current interest with Aluminium 6061 to Aluminim 6061. Method/Analysis: The present paper discusses the process parameters followed by mechanical properties and microstructures which affect the weld strength. Findings: Mechanical properties-Tensile strength attained with different process parameters and Microstructures are obtained by Optical Metallurgical Microscopy (MET SCOPE-1) and a Scanning Electron Microscopy equipped with an X-radiation detector EDS Conclusion/Application: In this study Similar FSW between Al 6061 to Al 6061 plates with thickness 6mm were performed. The future research will contain creep tests and microstructural investigations using aluminium 6061 alloy using TEM microscopy (Transmission Electron Microscopy).It is demonstrated that FSW of aluminium to aluminium alloys is becoming an emerging technology with numerous commercial applications.
Friction stir processing is a may be regarded as new method of changing the properties of a metal through intense, localized plastic deformation ,this process mixes the material without changing the phase (by melting or otherwise) and creates a micro structure with fine, equiaxedgrains, It is used to improve the micro structural properties of metals. In this paper , studying the mechanical properties for 7075-T73 aluminum alloy of friction stir welding and friction stir processing methods at variable rotation speeds (1500,1700 and 1900 rpm) with constant feed speed(40 mm/min). The best results of the welding line at the parameter 40 mm/min weld speed and 1700 RPM rotation speed for the FSW and FSP where the efficiency reaches to 84.61% for FSW and 89.05% for FSP of the ultimate tensile strength of the parent metal .and it is involved a finite element simulation of friction stir processing (FSP) of 7075-T73 Aluminum alloy. Numerical simulations are developed for thermal conductivity, specific heat and density to know the relationship of these factors with peak temperature, The simulation model is tested with experimental results. The results of the simulation are in good comparison with the experimental results.
Microstructural aspects of the friction-stir welding of 6061-T6 aluminum
Scripta Materialia, 1997
6061-T6 aluminum alloy plate (nominally 0.63 cm thick) was used in a series of friction-stir welding experiments to 'be reported herein. A series of butt welds and simulated welds in solid plate sections were conducted, as illustrated schematically in , at rotational speeds (R) ranging from 300 to 1000 rpm, and translational (traverse) velocities of 0.15 to 0.25 cm/s. The hardened carbon steel welding head pin (HP in ) was 0.63 cm in diameter and its length was .58 cm. The shoulder/chuck diameter was 355 356
Friction stir welding of aluminium alloy 6061-t651
IOP Conference Series: Materials Science and Engineering
One method of metal welding is a solid-state incorporation process, namely friction stir welding (FSW). This technique can be used on materials that are difficult to weld with fusion welding processes. Among the benefits of FSW are reducing distortion, eliminating solidification, saving energy and being environmentally friendly. This research investigates the effect of three different transverse speeds at 1.2, 2.4 and 3.6 (mm / s) on the hardness, tensile and micro structure properties of friction stir welds of AA6061-T651 plates. The research result find that the micro hardness and strength increase when the transverse speeds are increase. The micro structure showed that the grain size more smaller by increase the transverse speeds.
STUDIES ON FRICTION STIR WELDING OF ALUMINIUM ALLOYS 6061-TO-6061 SIMILAR METALS
The joining of similar 6061 –to-6061 aluminium plates of 4mm thickness was carried out by friction stir welding (FSW) technique. FSW process, a so-called welding-head pin rotating at speeds usually in excess of a few hundred rpm, travels down the length of contacting metal plates, creating a highly plastically deformed zone through the associated force and frictional heating. FSW of Aluminium to Aluminium has captured important attention from manufacturing industries, such as Shipbuilding, Automotive, Railway and Aircraft production. Variable Process Parameters have been employed to analyse the influence of Microstructural and Tensile Properties. Effect of welding speed on microstructures, hardness distribution and tensile properties of the welded joints were investigated. By varying the process parameters, defect free and high efficiency welded joints were produced.
Microstructural Evaluation of Friction Stir Welded Aluminium Alloy 6063
International Journal of Recent Technology and Engineering (IJRTE), 2019
Friction Stir Welding (FSW) is a vital solid-state process that can produce a joint with high quality and strength. The microstructure of the friction stir welded parts needs to be studied to use this method for multiple applications. FSW eliminates fusion fastening issues such as crack, porosity, and shrinking solidification. In the present work, AA6063 material was welded with prominent parameters, rotational speed, transverse speed, and axial load. The microstructure of distinct weld regions including the nugget area, heat affected zone, thermo-mechanically affected zone, and parent metal has been examined by optical microscopy. In this investigation the fine equiaxed grains were observed in the thermo-mechanically affected zone and nugget zone of various samples.