Tool geometry, rotation and travel speeds effects on the properties of dissimilar magnesium/aluminum friction stir welded lap joints

Mohammadi, Javad; Behnamian, Yashar; Mostafaei, Amir; Gerlich, A.P.

doi:10.1016/j.matdes.2015.03.017

Cited by 90 publications

(26 citation statements)

References 42 publications

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“…As observed in Figure 3c, islands of a globular phase and a typical eutectic structure are observed in the SZ of the M3 weld. This globular morphology is very similar to the one of the Al12Mg17 phase observed during lap joint of AA6061/AZ31 alloys by FSW, besides the eutectic structure is similar to Mg + Al12Mg17 phase reported elsewhere [11,12]. Additionally, this dissimilar joint has a higher Mg content considering that the dark areas in the microstructure of the aluminum alloy in the SZ, correspond to magnesium material and Mg-rich phases (Figure 3e).…”

Section: Macro and Microstructuresupporting

confidence: 83%

Friction Stir Welding of Dissimilar AA6061-T6 to AZ31B-H24 Alloys

et al. 2020

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Friction Stir Welding (FSW) is a solid-state joining process that uses a non-consumable tool to join two facing workpieces without melting the workpiece material. FSW is predominantly used for welding lightweight materials such as aluminum and magnesium alloys. In the present investigation, AA6061-T6 and AZ31B-H24 alloys were joined by FSW using the following parameters: rotational speed of 400, 800, 1200 and 1600 rpm, welding speed of 30 and 60 mm/min and tilt angle of 1° and 3°. In some cases, a tool offset of 1 mm was used into the Mg-based alloy. Microstructural characteristics of the weld joints were analyzed by optical microscopy and scanning electron microscopy. The experimental results show that dissimilar welds can be obtained by placing the AA6061-T6 alloy on the advancing side under two processing conditions: i) without a tool offset using a welding speed of 30 mm/min, a rotational speed of 400 rpm and a tilt angle of 1° (M7) and ii) with a tool offset and a welding speed of 30 mm/min, using a rotational speed of 1200 rpm and a tilt angle of 3° (M3). Al3Mg2 and Al12Mg17 intermetallic compounds were observed in the stir zone. Hardness and tensile strength of joints M7 varied from 76 to 129 HV, and 88.2 MPa respectively, and these properties varied from 95 to 153 HV, and 18.95 MPa in joints M3.

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Section: Macro and Microstructuresupporting

confidence: 83%

Friction Stir Welding of Dissimilar AA6061-T6 to AZ31B-H24 Alloys

et al. 2020

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“…J. Mohammad et al observed Lap joint friction stir welding (FSW) at different A Z31B and Al 6061 combinations sheet were coordinated by apply distinctive welding parameters with geometry of tool, pivot and travel distance. Lap shear crack load examination from mechanical structure and reduced scale toughness estimations exhibited with in a meantime growing the instrument turn and travel speed, the rigidity of joint and flexibility achieved a greatest value [17]. Shen et al studied overlap welds and comparison of aluminium 5754 to DP600 steel (Al specimen, and steel specimen) by friction stir welding (FSW) also done.…”

Section: Tool Traverse Speedmentioning

confidence: 99%

An Experimental Analysis on Operating Parameter’s Influence on Friction Stir Welding/processing

Panwar¹,

Chandna²

2019

IJEAT

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This paper clarifies the basic standard and procedure of FSW. It consists all the specialized characteristic which influences the procedure and excellence of FSW joint. Effect on every form of joint setup is taken into consideration. All the methodological parts of FSW tool geometry and material of tool is taken. In this article influence of essential parameters like tool rpm, tool feed, tool tilt angle, downward command and tool depression time on joining quality has been calculated. Finally, the fields on which further more exploration can be carried out has been identified.

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“…The shoulder diameter variation results in more change in energy than pin diameter variation. Ramanjaneyulu et al [10] presents the formulation of a mathematical model with process parameters and tool geometry to predict the responses of friction stir welds 2014-T6 aluminium alloy. The most influential process parameters considered are spindle speed, welding speed, tilt angle and tool pin profile.…”

Section: Introductionmentioning

confidence: 99%

Modelling and Simulation of Friction Stir Welding and Under Water Friction Stir Welding of Al6063 Alloy

Krishna¹,

Jaware²,

Srikant³

2020

ujme

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Friction stir welding (FSW) is a solid-state welding process that is gaining importance in recent times due to better control of microstructure. In the present work, a thermo-mechanical model is developed for FSW and under water friction stir welding (UFSW) of AA 6063-T6. Temperature dependent viscosity is considered as thermo physical property along with constant values of thermal conductivity and specific heat. Fine mesh is used for complex parts of tool to obtain good results. Rotational speed of tool, feed rate and plunge pressure are taken as influencing parameters for study. Partial stick-slip boundary condition is taken between the tool and work piece interfaces. Experiments were carried out for validation of model. The results of thermal and material flow histories are extracted. Results shows the significant differences in peak temperature of FSW and UFSW along with reduction in heat affected zone in UFSW whereas results of material flow velocity underlined the differences between the FSW and UFSW in term of peak values of stir velocities with the change in influencing parameters.

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Tool geometry, rotation and travel speeds effects on the properties of dissimilar magnesium/aluminum friction stir welded lap joints

Cited by 90 publications

References 42 publications

Friction Stir Welding of Dissimilar AA6061-T6 to AZ31B-H24 Alloys

Friction Stir Welding of Dissimilar AA6061-T6 to AZ31B-H24 Alloys

An Experimental Analysis on Operating Parameter’s Influence on Friction Stir Welding/processing

Modelling and Simulation of Friction Stir Welding and Under Water Friction Stir Welding of Al6063 Alloy

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