Pinless Friction Stir Spot Welding of Mg‒3Al‒1Zn Alloy with Zn Interlayer

Xu, Rongzheng; Ni, D.R.; Yang, Qiang; Liu, C.Z.; Ma, Zhongting

doi:10.1016/j.jmst.2015.08.012

Cited by 66 publications

(23 citation statements)

References 37 publications

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“…Figure 9 (a) shows the shape of the lamellar structure which shows that Al and Zn diffuse well. Xu, et al [1] stated that the addition of Zn interlayer functions to increase joint bond, so that the joint strength increases.…”

Section: Table 3 Distribution Of Zn In Mapping Test Observationsmentioning

confidence: 99%

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Effect of Rotational Speed and Dwell Time on Physical and Mechanical Properties of Friction Stir Spot Welding Aluminium 1100 With Zn Powder Interlayer Addition

Noor

Muhayat²,

Triyono³

2019

Mekanika

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<p><em>Friction stir spot welding (FSSW) is one of the development of solid state welding to joint lightweight materials such as aluminium. In the automotive industry, lightweight materials are needed in the structure of vehicle construction to improve efficiency in vehicles. This research aims to find out how the effect of rotational speed and dwell time on physical and mechanical properties on the weld joint of aluminium 1100 with Zn interlayer addition. Variations used in rotational speed 1000, 1250, 1600 rpm and dwell time 6, 7, 8 s. Pullout fracture occur in tensile tests that are getting bigger with increasing rotational speed and dwell time. The results of SEM and EDS observations showed that the metallurgical bonded zone increased and kept the hook defect away. The spread of Zn in the stir zone area causes the formation of solid Al-Zn phase in a solid solution. The hook defect filled with Zn can minimize cracks that occur, so increased the tensile shear load. The highest tensile shear load value of FSSW AA1100 without Zn interlayer is 3.61 kN, while the FSSW AA1100 with Zn interlayer addition is 4.34 kN.</em></p>

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Section: Table 3 Distribution Of Zn In Mapping Test Observationsmentioning

confidence: 99%

“…The use of lightweight and strong materials is one of the important things, especially in the automotive sector to improve fuel efficiency in vehicles. The construction structure of the vehicle also requires a good welding procedure to improve the mechanical properties of the material [1][2].…”

Section: Introductionmentioning

confidence: 99%

Effect of Rotational Speed and Dwell Time on Physical and Mechanical Properties of Friction Stir Spot Welding Aluminium 1100 With Zn Powder Interlayer Addition

Noor

Muhayat²,

Triyono³

2019

Mekanika

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show abstract

“…shows a material composition comprising 1% Zn of 78at% Al and the remainder of the other material. Fig.7 The use of Zn interlayer particles gives different effects on each joint [15,17,19,25]. The dispersion of Zn particles reacting with Al forms a reaction area.…”

Section: Microstructure Of Fssw Al Alloy Joints With the Addition Of mentioning

confidence: 99%

“…Hooking defects can be solved by adding a second interlayer on the surface [15]. Use of Zn interlayer can eliminate hook defects, ICM formation, and grain size changes thereby strengthening the joint [16][17][18]. Interlayer Zn can be diffused to form structures eutectoid significantly improve the joint [19].…”

Section: Introductionmentioning

confidence: 99%

Effect of Zn Interlayer Particles on Mechanical Properties and Microstructure of Friction Stir Spot Welding Aluminum Alloy

2018

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Global warming can be reduced by controlling emissions in motor vehicles. Lightweight aluminum materials can lower the engine work so as to reduce fuel consumption.The effect of dwell time on mechanical properties and microstructure friction stir spot welded AA1100 with particle interlayer Zn were investigated. The result shows that the particle interlayer Zn affect to the mechanical properties. The tensile shear load friction stir spot welded AA1100 with particle interlayer Zn is higher than hart of without particle interlayer Zn. In line with tensile shear load that the hardness of friction stir spot welded Al with particle interlayer Zn got the higher hardness than of without particle interlayer Zn. The addition of particle interlayer Zn reduce the hook defect and spread in the aluminum matrix as solid solution.

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“…There are many advantages of overcoming large differences of dissimilar material properties and it is found that FSW is an ideal method of connecting dissimilar materials. Xu et al [17] studied the strength of pinless friction stir spot welding joint with addition of a thin Zn interlayer, and the results showed that an intermetallic layer was formed due to an alloying reaction occurring between the Mg substrate and Zn interlayer during friction stir spot welding (FSSW). Chen et al [18,19] obtained a high strength connection joint with a lap configuration of setting Mg on top of steel by FSW.…”

Section: Introductionmentioning

confidence: 99%

The Role of Mechanical Connection during Friction Stir Keyholeless Spot Welding Joints of Dissimilar Materials

Liu

Wang

et al. 2017

Metals

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Abstract:Contrast experiments of lap joints among dissimilar AZ31B Mg alloy, Mg99.50, zinc-coated DP600 sheet, and non-zinc-coated DP600 sheet were made by friction stir keyholeless spot welding (FSKSW) and vacuum diffusion welding (VDW), respectively. Scanning electron microscopy (SEM) and energy disperse spectroscopy (EDS) were used to investigate the microstructures and components of the joints welded. The experimental results show that the FSKSW bonding method is a kind of compound mode that contains a mechanical connection and element diffusion fusion connection, in which mechanical connection has the main decisive function on joints of Mg/steel. Elements diffusion exists in the interfacial region of the joints and the elements diffusion extent is basically the same to that of VDW. The elements' diffusion in Mg/steel using FSKSW is defined in the reaction between small amounts elements of the base metal and zinc-coated metals. The intermetallic compounds and composite oxide perform some reinforcement on the mechanical connection strength.

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Pinless Friction Stir Spot Welding of Mg‒3Al‒1Zn Alloy with Zn Interlayer

Cited by 66 publications

References 37 publications

Effect of Rotational Speed and Dwell Time on Physical and Mechanical Properties of Friction Stir Spot Welding Aluminium 1100 With Zn Powder Interlayer Addition

Effect of Rotational Speed and Dwell Time on Physical and Mechanical Properties of Friction Stir Spot Welding Aluminium 1100 With Zn Powder Interlayer Addition

Effect of Zn Interlayer Particles on Mechanical Properties and Microstructure of Friction Stir Spot Welding Aluminum Alloy

The Role of Mechanical Connection during Friction Stir Keyholeless Spot Welding Joints of Dissimilar Materials

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