Process forces and heat input as function of process parameters in AA5083 friction stir welds

Kumar, Rajneesh; Singh, Kanwer; Pandey, Sunil

doi:10.1016/s1003-6326(11)61173-4

Cited by 115 publications

(61 citation statements)

References 19 publications

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“…If the axial force is large enough, it may lift the tool from its original position [24]. Since the relatively high welding speeds tend to create a strong interaction force between the welding tool and workpiece [25,26], the tool lift occurs between 100 and 300 mm/min, and consequently, slightly higher top surfaces of welds relative to BM are observed under the condition of a zero shoulder plunge depth. During FSW, the upper part of the workpiece is mainly stirred by the tool shoulder.…”

Section: Test and Analysismentioning

confidence: 99%

Microstructure–property characteristics of a novel non-weld-thinning friction stir welding process of aluminum alloys

et al. 2015

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Section: Test and Analysismentioning

confidence: 99%

Microstructure–property characteristics of a novel non-weld-thinning friction stir welding process of aluminum alloys

et al. 2015

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“…This may be the reason for tensile strength of the joints to raise at higher plunge depth. On increasing the plunge depth beyond the optimum level (i.e., 0.2 mm), not only the thinning takes place due to reduced space under the shoulder, but also increases the associated heat input and the NZ temperature rises further, which in turn causes grain growth in an already dynamically recrystallized fine grained NZ [22]. As such, tensile strength decreases due to local thinning and grain coarsening.…”

Section: Tensile Resultsmentioning

confidence: 99%

Friction Stir Welds of Al Alloy-Cu: An Investigation on Effect of Plunge Depth

Wahid¹,

Siddiquee²,

Khan³

et al. 2016

Archive of Mechanical Engineering

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In the present study, butt joints of aluminum (Al) 8011-H18 and pure copper (Cu) were produced by friction stir welding (FSW) and the effect of plunge depth on surface morphology, microstructure and mechanical properties were investigated. The welds were produced by varying the plunge depth in a range from 0.1 mm to 0.25 mm. The defect-free joints were obtained when the Cu plate was fixed at the advancing side. It was found that less plunging depth gives better tensile properties compare to higher plunging depth because at higher plunging depth local thinning occurs at the welded region. Good tensile properties were achieved at plunge depth of 0.2 mm and the tensile strength was found to be higher than the strength of the Al (weaker of the two base metals). Microstructure study revealed that the metal close to copper side in the Nugget Zone (NZ) possessed lamellar alternating structure. However, mixed structure of Cu and Al existed in the aluminum side of NZ. Higher microhardness values were witnessed at the joint interfaces resulting from plastic deformation and the presence of intermetallics.

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“…The experimental results show that when rotation speed increases and travel speed decreases, it began to have the obvious difference of the tensile strength. This is because the high rotation speed make more heat input than lower rotational speed [19]. Moreover, from the rotation speed 1110 and 1320 rpm with travel speed at 80 and 160 mm/min, their tensile strength were 34.03 and 26.65 MPa respectively, which were less than base material.…”

Section: Microstructure Analysismentioning

confidence: 94%

Dissimilar Welding by Friction Stir Welding of C3064 Brass with AA1100 Aluminum Alloy

Dunyakul¹,

Meengam²,

Maunkhaw³

et al. 2017

IJET

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Abstract-This research aims study parameters in the dissimilar butt-joint of AA1100 aluminum alloy with C3604 brass by using a FSW process. The parameter is rotation speed 660, 1110 and 1320 rpm, travel speed at 80 and 160 mm/min, lead angle 3 degree and pin tool cylindrical shape from JIS-SKH 57 carbon steel. The experimental results show that FSW between both materials bonded together very well. The increase of rotation speed with lower travel speed is likely to increase the tensile strength as well. The highest tensile strength was 49.25 MPa from rotation speed 1320 rpm and travel speed at 80 mm/min. On the other hand, at lower rotation speed and a high travel speed, a low tensile strength of 25.35 MPa was observed from rotation speed 1110 rpm and travel speed at 160 mm/min. After FSW, the hardness properties were changed in FZ due to the flow of meat material, which their average hardness was around 53 HV. The microstructure of both materials was changed in FZ forming friction force and thermal temperature, it also found that the joint are alternately flow of meat material of both types.Keyword -Friction Stir Welding, C3604 Brass, AA1100 Aluminum Alloy, Dissimilar Welding. These processes provide many advantages; especially FSW process due to filler metal, non-consumable tool, low power consumption, joint high strength, ability to weld different materials and environmentally friendly. This FSW process was patented in 1991 by The Welding Institute (TWI) of Cambridge, England. INTRODUCTION[6] However, the FSW process often used aluminum alloy or other materials which their melting points are not high. This is because they rely on heating from friction force. In general, FSW process is used for welding between different materials, which is easier than liquid state welding process. The mechanism of FWS process starts by a rotating tool plunged into specimens until the tool shoulder is contacted on the surface of the specimens. Then, the heat from the friction softens two different materials and the rotation speed generates the flow of meat material until the two materials bonded together. The parameters for FSW process are rotation speed, travel speed, plunge load or plunge position, tool lead angle and tool design/geometry., etc.[7] The AA1100 aluminum alloy is commonly used due to its good thermal properties and easy to acquire [8]. Likewise, C3604 brass is a popular material due to its good electrical properties and corrosion resistant [9]. For welding both materials together, it is difficult but interesting because chemical compositions, microstructure and melting point are totally different. Thus, this research studied the optimum parameters that affect joint welding of AA1100 aluminum alloys with C3604 brass by FSW process. This interesting result from changes in the structure of joint area and mechanical properties after welding was observed. EXPERIMENT Material preparationThe C3604 brass and wrought AA1100 aluminum alloy were materials used for this FSW process. These specimens were prepared to be sheets...

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Process forces and heat input as function of process parameters in AA5083 friction stir welds

Cited by 115 publications

References 19 publications

Microstructure–property characteristics of a novel non-weld-thinning friction stir welding process of aluminum alloys

Microstructure–property characteristics of a novel non-weld-thinning friction stir welding process of aluminum alloys

Friction Stir Welds of Al Alloy-Cu: An Investigation on Effect of Plunge Depth

Dissimilar Welding by Friction Stir Welding of C3064 Brass with AA1100 Aluminum Alloy

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