Effect of Tool Rotational Speed on Temperature and Impact Strength of Friction Stir Welded Joint of Two Dissimilar Aluminum Alloys

Das, Umasankar; Toppo, Vijay

doi:10.1016/j.matpr.2017.12.223

Cited by 24 publications

(17 citation statements)

References 13 publications

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“…However, Min-Su-Han et al [26] in their report revealed that excessively high temperature from high welding speed could result in defects and poor mechanical properties. Umasanka and Vijay [27] studied the correlation between temperature, rotational speed and mechanical strength of FSW of 6101-T6 and 6351-T6 alloys. The results indicate that there is a corresponding increase in temperature as the rotational speed increases.…”

Section: Introductionmentioning

confidence: 99%

“…Some of these approaches include the use of thermal cameras and thermocouple embedded in tool [32][33][34]. Others include infrared thermometers, ultrasound, neutron-based methods [9,31] and thermocouples embedded in the workpiece [27,35,36]. The most commonly employed among these methods in literature is the use of thermocouples embedded in the workpiece at close proximity to the rotating pin area [37].…”

Section: Introductionmentioning

confidence: 99%

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Tool rotational speed impact on temperature variations, mechanical properties and microstructure of friction stir welding of dissimilar high-strength aluminium alloys

Abolusoro

Akinlabi

Kailas

2020

J Braz. Soc. Mech. Sci. Eng.

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Temperature variations during friction stir welding result from the heat generated by the frictional action of a rotating tool on the workpiece. This temperature distribution affects the mechanical behaviour and ultimately the quality of welds produced. The study of the correlations between process parameter, temperature, mechanical properties and microstructure has become imperative in order to promote welds devoid of defects and possessing sound mechanical properties and to establish a temperature feedback control for effective components designs for industrial applications. This work studied the impact of tool rotational speed on temperature profile, mechanical behaviour and microstructure of friction stir welding of dissimilar aluminium alloy 6101-T6 and 7075-T651. Processing parameters of three different rotational speeds with values 1250 rpm, 1550 rpm and 1850 rpm and a constant travel speed of 50 mm/min were employed. The temperature profile was measured with one end of thermocouple wires embedded in the plates and the other end connected to a data capturing software device. The temperature profile indicates that the temperature rises with time and is higher at the retreating sides than at the advancing side of the weld. The tensile test results show that the ultimate tensile strength decreases as the temperature increases. Microstructural observations of weld zone revealed non-uniformity in material flow. However, more material penetration into each other occurred more at 1550 rpm.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Tool rotational speed impact on temperature variations, mechanical properties and microstructure of friction stir welding of dissimilar high-strength aluminium alloys

Abolusoro

Akinlabi

Kailas

2020

J Braz. Soc. Mech. Sci. Eng.

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“…Umasanka and Vijay studied the relationship between tool rotational speed, mechanical impact strength and temperature on AA6101-T6 and AA6351-T6 alloys welded using FSW. Their result indicates that temperature goes higher with an increase in rotational speed and that the impact strength depends on the pressure and the duration of impact [15]. Yoshima et al welded dissimilar ADC12 and AA6061 alloy and examined the temperature distributions during the welding.…”

Section: Introductionmentioning

confidence: 99%

“…Other methods like ultrasound and neutron-based techniques have also been used [23,24]. However, the most commonly used method observed in literature is that of a thermocouple embedded in workpiece [15,16,25,26]. This particular method was employed in this study.…”

Section: Introductionmentioning

confidence: 99%

“…Thermocouple positions have also been reported to affect the accuracy of temperatures measured. While close proximity of the thermocouple to the rotating tool pin or the stir zone gives a better estimate of the weld temperature, the likely destruction of the thermocouple wires as the pin progresses limits the use of this method [15]. Hence in this study, the thermocouple was embedded in the workpiece in an area close to the heat-affected zone.…”

Section: Introductionmentioning

confidence: 99%

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Effects of Processing Parameters on Temperature Distributions, Tensile Behaviour and Microstructure of Friction Stir Welding of Dissimilar Aluminium Alloys

Abolusoro

Akinlabi

2020

Lecture Notes in Mechanical Engineering

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Research has shown that there is a correlation between process parameters, temperature variations, tensile strength, microstructures and the durability of the welds obtained in friction stir welding (FSW). The need to institute this correlation is crucial in order to achieve a weld free of defects and having sound mechanical behaviours for industrial applications. This work examines process parameters effects on variations of weld temperature, tensile strength and microstructures in dissimilar FSW of 6101-T6 and 7075-T651 aluminium alloys with a plate thickness of 6 mm. The welding was done with rotational speeds of 1250, 1550 and 1850 rpm and traverse speeds of 50 and 110 mm/min. The results obtained indicate that processing parameters significantly affect the temperature distributions in the weld. Increase in rotational speed increases the temperature but cause a decrease in tensile strength. While the increase in travel speed cause a reduction in temperature which results to increase in the tensile strength. Highest tensile strength of 143 MPa was obtained at 1250 rpm and 50 mm/min but better mixing of both materials was achieved at 1550 rpm and 50 mm/min.

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Parametric Investigations on Friction Stir Welding of Aluminium Alloys

Shaik

Gowd

Durgaprasad

2019

Lecture Notes in Mechanical Engineering

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Effect of Tool Rotational Speed on Temperature and Impact Strength of Friction Stir Welded Joint of Two Dissimilar Aluminum Alloys

Cited by 24 publications

References 13 publications

Tool rotational speed impact on temperature variations, mechanical properties and microstructure of friction stir welding of dissimilar high-strength aluminium alloys

Tool rotational speed impact on temperature variations, mechanical properties and microstructure of friction stir welding of dissimilar high-strength aluminium alloys

Effects of Processing Parameters on Temperature Distributions, Tensile Behaviour and Microstructure of Friction Stir Welding of Dissimilar Aluminium Alloys

Parametric Investigations on Friction Stir Welding of Aluminium Alloys

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