Friction Stir Welding and Processing

Mishra, Rajiv S.; De, Partha Sarathi; Kumar, N.

doi:10.1007/978-3-319-07043-8

Cited by 551 publications

(658 citation statements)

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“…Friction stir welding tools must have some special features such as ambient and elevated temperature strength, elevated temperature stability, wear resistance, fracture toughness. H13 is a chromium-molybdenum hot-worked air-hardening steel and is well known with its good high-temperature strength, thermal fatigue resistance and wear resistance (Mishra and Mahoney, 2007). H13 chromium hot-work steel is widely used in hot and cold work tooling applications.…”

Section: Experimental Studymentioning

confidence: 99%

Friction Stir Welding of AZ31 Magnesium Alloys - A Numerical and Experimental Study

Serіndağ

Kıral

2017

Lat. Am. j. solids struct.

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In this paper, weldability of magnesium alloys by friction stir welding (FSW) method which is difficult to join by the fusion welding have been investigated experimentally and numerically. To this end, the connection of magnesium alloys was performed using different welding parameters. AZ31 Mg-alloy plates were friction stir welded at rotation speed of 1200 rev/min and translational speeds of 80,100,120,140 mm/min. Temperature evolution in the weld zone during welding was measured by using embedded K-type thermocouples. The temperature measurements on both advancing and retreading sides were performed by ten thermocouples. Tensile and Vickers hardness tests were conducted to evaluate the mechanical properties and the hardness distribution on the weld, respectively. During FSW, heat is generated by the friction and plastic deformation. Knowledge of the temperature distribution is requisite since mechanical properties and microstructure are substantially affected by the heat generation. It was observed that the heat generated during the FSW process was increasing and the grain structure was refined as the translational speed was decreasing. In the finite element analyses, modeling of the FSW process were carried out by ANSYS software to determine the temperature and stress distributions in the welded joint during FSW. An APDL (ANSYS Parametric Design Language) code was developed to simulate FSW process. Transient nonlinear finite element analyses were performed at two stages which the first step is thermal analysis which heat transfer from the pin and shoulder to the plates was modeled and the second is the structural analysis which the temperature data obtained from the thermal analysis in the first stage is used.

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Section: Experimental Studymentioning

confidence: 99%

Friction Stir Welding of AZ31 Magnesium Alloys - A Numerical and Experimental Study

Serіndağ

Kıral

2017

Lat. Am. j. solids struct.

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“…Stirred material in the region of rotating pin is moved by the translation of tool along the line of joint from the front to the rear of the pin to conclude welding process [5].…”

Section: B Tool Rotation Speed and Translation Speedmentioning

confidence: 99%

“…Further, profiled edge preparation or consumable filler material is not necessary so it is known as eco-friendly welding process [4]. The welding mechanism is based on the frictional heat generation process through the interaction of a non-consumable tool having specially designed shoulder profile and pin profile that rotate and plunge to adjoining edges of the plates to be joined [5].The direction of the tool rotation is opposite as the welding direction in one side half plate that is called the retreating side, while the tool rotation is same as the welding direction other side of half plate is called advancing side as given in Fig. 1.…”

Section: Introductionmentioning

confidence: 99%

Emerging Modeling and Simulation Techniques for Friction Stir Welding - A Review

2015

International Conference on Advancements and Recent Innovations in Mechanical, Production and Industrial Engineering

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Abstract-Friction stir welding is a relatively new solid-state joining technique which is widely acceptable in various industries (aerospace, automotive, railway, and shipbuilding) to join similar and dissimilar metallic alloys that are difficult to weld by conventional fusion welding process. In last decade, the friction stir welding processes developments have been active areas research due to dimensional stability of the welded structure, low residual stresses and most important eco-friendly wielding process. The welding mechanism is based on the frictional heat generation process through the interaction of a non-consumable tool to adjoining edges of the plates to be joined. There are a number of issues that affect the performance of friction stir welding such as heat generation, material flow, tool geometry, tool rotation, travel speed, axial force, and tilt angle. Several modeling and simulation techniques have been applied for the characterization of friction stir wielding process phenomenon that are empirical, analytical, numerical and artificial intelligence modeling techniques. The objective of this paper is to review the recent works on modeling and simulation techniques and to emphasize the future requirements for increased understanding of the modeling and simulation efforts in the field of friction stir welding.

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Section: Introductionunclassified

“…La aleación AA7075-T651 es una aleación de alta resistencia del sistema Al-Zn-Mg-Cu, de gran aplicación en uso aeronáutico, que no es soldable por procesos de fusión, siendo en la actualidad soldada por FSW. Esta aleación es del tipo termotratable y se entrega en condición de máxima dureza, alcanzando los 550 MPa de resistencia a la tracción [1].En aleaciones de aluminio termotratables, el ciclo térmico desarrollado durante la soldadura afecta la microestructura original del material base, debido a fenómenos de disolución, precipitación y sobreenvejecido. En las zonas alejadas a la fuente de calor los precipitados aumentan su tamaño y se reducen en número, mientras que a medida que disminuye la distancia a la línea central aumenta la temperatura pico y la disolución de los mismos.…”

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Efecto del procedimiento de soldadura por FSW en la evolución temporal de las propiedades en uniones de AA 7075-T651

Tufaro

Svoboda

2014

Soldag. insp.

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ResumenSe estudió el efecto del procedimiento de soldadura sobre la evolución temporal de las propiedades mecánicas de uniones soldadas por fricción-agitación (FSW) days).The minimum hardness (HV min ) value was located in the heat affected zone (HAZ). That HV min decreased with heat input and was increased with the time elapsed after welding showing a logarithmic relationship, for the different welding conditions analyzed. This HV min increasing was higher for the sample welded with the lower heat input. Tensile strength of welded joints increased with the time after welding, according to a logarithmic relation too, reaching an joint efficiency of 80%.Key-words: FSW; aluminum; AA 7075-T651; strain aging; mechanical properties. IntroducciónLa Soldadura por Fricción-Agitación (FSW) ha sido un campo de fuerte desarrollo en los últimos años. En particular la introducción de este proceso ha revolucionado la construcción de estructuras soldadas de aleaciones de aluminio, encontrando gran cantidad de aplicaciones en industrias como aeronáutica, aeroespacial, automotriz y naval, entre otras. La aleación AA7075-T651 es una aleación de alta resistencia del sistema Al-Zn-Mg-Cu, de gran aplicación en uso aeronáutico, que no es soldable por procesos de fusión, siendo en la actualidad soldada por FSW. Esta aleación es del tipo termotratable y se entrega en condición de máxima dureza, alcanzando los 550 MPa de resistencia a la tracción [1].En aleaciones de aluminio termotratables, el ciclo térmico desarrollado durante la soldadura afecta la microestructura original del material base, debido a fenómenos de disolución, precipitación y sobreenvejecido. En las zonas alejadas a la fuente de calor los precipitados aumentan su tamaño y se reducen en número, mientras que a medida que disminuye la distancia a la línea central aumenta la temperatura pico y la disolución de los mismos. Esto produce que la dureza disminuya desde un valor máximo, que es la dureza del material base, hasta un valor mínimo a medida que disminuye la distancia a la línea de soldadura.

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Friction Stir Welding and Processing

Cited by 551 publications

References 0 publications

Friction Stir Welding of AZ31 Magnesium Alloys - A Numerical and Experimental Study

Friction Stir Welding of AZ31 Magnesium Alloys - A Numerical and Experimental Study

Emerging Modeling and Simulation Techniques for Friction Stir Welding - A Review

Efecto del procedimiento de soldadura por FSW en la evolución temporal de las propiedades en uniones de AA 7075-T651

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