The Influence of Process Parameters on Microstructure and Mechanical Properties of Friction Stir Welded Al 5083 alloy Lap joint

Bisadi, H.; Tour, M.; Tavakoli, A.

doi:10.5923/j.materials.20110102.15

Cited by 30 publications

(15 citation statements)

References 13 publications

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“…upward material flow) [20]. While its occurrence in the nugget zone has been associated with changes in material flow direction, from downward to upward, depending on tool geometry and welding conditions (hot or cold) [21].…”

Section: Effect Of Pin Geometry On the Macrostructure Of Fsw Jointmentioning

confidence: 99%

Influence of tool geometry and rotational speed on mechanical properties and defect formation in friction stir lap welded 5456 aluminum alloy sheets

et al. 2014

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Friction stir welding of AA5456 aluminum alloy in lap joint configuration is with two different tempers, T321 and O, and different thicknesses, 5mm and 2.5mm was investigated. The influences of tool geometry and various rotational speeds on macrostructure, microstructure and joint strength are presented. Specifically, four different tool pin profiles (a conical thread pin, a cylindrical-conical thread pin, a stepped conical thread pin and Flared Triflute pin tool) and two rotational speeds, 600 and 800 rpm, were used. The results indicated that, tool geometry influences significantly material flow in the nugget zone and accordingly control the weld mechanical properties. Of particular interest is the stepped conical threaded pin, which is introduced for the first time in the present investigation. Scanning electron microscopy investigation of the fracture location of samples was carried out and the findings correlated with tool geometry features and their influences on material flow and tension test results. The optimum microstructure and mechanical properties were obtained for the joints produced with the stepped conical thread pin profile and rotational speed of 600 rpm. The characteristics of the nugget zone microstructure, hooking height, and fracture location of the weld joints were used as criteria to quantify the influence of processing conditions on joint performance and integrity. The results are interpreted in the framework of physical metallurgy properties and compared with published literature.

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Section: Effect Of Pin Geometry On the Macrostructure Of Fsw Jointmentioning

confidence: 99%

Influence of tool geometry and rotational speed on mechanical properties and defect formation in friction stir lap welded 5456 aluminum alloy sheets

et al. 2014

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“…Nevertheless, it has been demonstrated that FSW is still viable with other types of joints namely step joint, flat 90°joint or T-lap joint [5,16]. Lap joints are widely used in assemblies of parts in aerospace and automotive industries.…”

Section: Introductionmentioning

confidence: 99%

Study of the fatigue behaviour of dissimilar aluminium joints produced by friction stir welding

Infante

Braga

Duarte

et al. 2016

International Journal of Fatigue

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“…In recent years, FSW has been the most suited for aluminum alloys lap joints [7]. H. Bisadi et al [8] studied the microstructure and mechanical properties in certain FSW process parameters (rotational and welding speed) for lap joint welding. The material used was 5083 aluminum alloy, 2.5 mm thick and the parameters applied were 600, 825, 1115, 1550 rpm rotational speeds and 32, 60 mm/min welding speeds,He found that A superior weld joint is obtained at lower rotational and welding speeds.…”

Section: Introductionmentioning

confidence: 99%

EFFECT OF WELDING PARAMETERS ON MECHANICAL PROPERTIES OF FRICTION STIR LAP WELDED JOINTS FOR SIMILAR ALUMINUM ALLOYS (AA1100-H112 & AA6061-T6)

Abbass¹,

Raheef²

2018

JEASD

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Friction stir welding (FSW) is a solid state welding used for joining similar and dissimilar aluminum alloys which are hard to weld by conventional fusion welding processes. In this study friction stir lap welding (FSLW) Joints are made for similar aluminum alloys (AA1100 to AA1100) and(AA6061to AA6061) sheets of 3mm thickness and those alloys have low to medium strength and have difference in melting temperature and other physical properties.FSLW processes were carried out by conventional technique. The friction stir lap welding of similar aluminum alloys was carried out by varying the welding parameters, such as tool rotation speeds (1000, 1250 and 1600pm) and travel speeds (35, 75 and 100mm) and pin length of ( 5.4 mm) with using cylindrical threaded pin geometry or profile. Many tests and inspections were performed such as X-Ray radiographic and tensile shear test .Microhardness and microstructure observations by using optical and SEM were carried out at the best welding parameters. The above tests were used to evaluate the weld quality and joint efficiency under different welding parameters. The best welding parameters appeared in FSLW were 1250rpm and travel speed 100 mm/min. It was found that higher hardness value was (94.38HV) for 6061-T6 and 49HV for 1100-H112 in stir zone for both FSLW joints of AA6061-T6 and AA1100-H112 and that decrease toward the HAZ and base metals of AA1100 and AA6061.Space with a font size 6

show abstract

The Influence of Process Parameters on Microstructure and Mechanical Properties of Friction Stir Welded Al 5083 alloy Lap joint

Cited by 30 publications

References 13 publications

Influence of tool geometry and rotational speed on mechanical properties and defect formation in friction stir lap welded 5456 aluminum alloy sheets

Influence of tool geometry and rotational speed on mechanical properties and defect formation in friction stir lap welded 5456 aluminum alloy sheets

Study of the fatigue behaviour of dissimilar aluminium joints produced by friction stir welding

EFFECT OF WELDING PARAMETERS ON MECHANICAL PROPERTIES OF FRICTION STIR LAP WELDED JOINTS FOR SIMILAR ALUMINUM ALLOYS (AA1100-H112 & AA6061-T6)

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