Defects and tensile properties of 6013 aluminum alloy T-joints by friction stir welding

Zhao, Yixin; Zhou, Lilong; Wang, Qingzhao; Yan, Keng; Zou, Jiasheng

doi:10.1016/j.matdes.2013.12.021

Cited by 91 publications

(39 citation statements)

References 18 publications

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“…In order to maintain a large heat input during friction-stir welding, the transverse speed can be reduced, thereby generating more heat and more plastic metal, which improves the flowability of the weld metal (Kumar and Satish Kailas 2008;Xiaopeng et al 2014). Experimental results (Zhao 2014) suggest that the area in which tunnel defects can occur, increases greatly as the traverse speed increases. Increasing shoulder diameter significantly increases the heat input volume, which directly improves the flowability of the weld metal into the cavities.…”

Section: Issues In Friction-stir Welding Of Aluminium Alloysmentioning

confidence: 95%

Investigation of weld defects in friction-stir welding and fusion welding of aluminium alloys

Kah

Rajan

Martikainen

et al. 2015

Int J Mech Mater Eng

170

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Transportation industries are obliged to address concerns arising from greater emphasis on energy saving and ecologically sustainable products. Engineers, therefore, have a responsibility to deliver innovative solutions that will support environmental preservation and yet meet industries' requirements for greater productivity and minimised operational costs. Aluminium alloys have successfully contributed to meeting the rising demand for lightweight structures. Notable developments in aluminium welding techniques have resolved many welding related problems, although some issues remain to be addressed. The present study attempts to give an overview of the key factors related to the formation of defects in welding methods commonly used with aluminium alloys. First, a concise overview of defects found in friction-stir welding, laser beam welding and arc welding of aluminium alloys is presented. The review is used as a basis for analysis of the relationship between friction-stir welding process parameters and weld defects. Next, the formation and prevention of the main weld defects in laser beam welding, such as porosity and hot cracking, are discussed. Finally, metallurgical aspects influencing weld metal microstructure and contributing to defects are tabulated, as are defect prevention methods, for the most common flaws in arc welding of aluminium alloys.

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Section: Issues In Friction-stir Welding Of Aluminium Alloysmentioning

confidence: 95%

Investigation of weld defects in friction-stir welding and fusion welding of aluminium alloys

Kah

Rajan

Martikainen

et al. 2015

Int J Mech Mater Eng

170

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show abstract

“…It is noteworthy that the higher rotation speed rate of FSW it is, the higher hardness it is found due to the effect of thermal dispersion. Moreover, hardness mechanism is caused by a solid solution [20], smaller fracture in eutectic phase [21], even distribution of phases [22], defects after FSW and stress [23][24]. These factors are influenced by thermal temperature.…”

Section: Results Of Hardness Testmentioning

confidence: 99%

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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“…It is clear that the fracture surface is characterized with a lot of dimples, which clearly shows the ductile failure mechanism and ductile fracture morphology reveals that the metallic bonding is performed in this region [33].…”

Section: Fracture Along the Welding Direction On Back Side Of Platementioning

confidence: 93%

Wear characteristics and defects analysis of friction stir welded joint of aluminium alloy 6061-T6

Kumar

Chattopadhyaya

Hloch

et al. 2016

EiN

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Defects and tensile properties of 6013 aluminum alloy T-joints by friction stir welding

Cited by 91 publications

References 18 publications

Investigation of weld defects in friction-stir welding and fusion welding of aluminium alloys

Investigation of weld defects in friction-stir welding and fusion welding of aluminium alloys

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

Wear characteristics and defects analysis of friction stir welded joint of aluminium alloy 6061-T6

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