Effect of tool geometry on microstructure and mechanical properties of friction stir lap welded magnesium alloy and steel

Chen, Y.C.; Nakata, Kohei

doi:10.1016/j.matdes.2009.03.007

Cited by 163 publications

(83 citation statements)

References 18 publications

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“…When the variable value exceeds the critical value, the weld strength starts decreasing. The size of the weld increased continously with the pin geometry variable ( Figures 6,11,13 and 15). For example, the weld stir zone thickness increased with the pin angle ( Figure 6).…”

Section: Resultsmentioning

confidence: 97%

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Effect of tool geometry on friction stir spot welding of polypropylene sheets

Bilici

2012

Express Polym. Lett.

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Abstract. The effects of tool geometry and properties on friction stir spot welding properties of polypropylene sheets were studied. Four different tool pin geometries, with varying pin angles, pin lengths, shoulder diameters and shoulder angles were used for friction stir spot welding. All the welding operations were done at the room temperature. Lap-shear tensile tests were carried out to find the weld static strength. Weld cross section appearance observations were also done. From the experiments the effect of tool geometry on friction stir spot weld formation and weld strength were determined. The optimum tool geometry for 4 mm thick polypropylene sheets were determined. The tapered cylindrical pin gave the biggest and the straight cylindrical pin gave the lowest lap-shear fracture load.

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Section: Resultsmentioning

confidence: 97%

“…FSSW has been succesfully applied to aluminium [9,10], magnesium [11] and steel [12] sheets, but there are very few publications on polymer FSSW applications [13][14][15][16]. The welding parameters and the tool geometry affect friction stir welding and friction stir spot welding stir zonestir zone formation and weld strength [17].…”

Section: K Bilicimentioning

confidence: 99%

Effect of tool geometry on friction stir spot welding of polypropylene sheets

Bilici

2012

Express Polym. Lett.

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“…The maximum strength of a butt type joint achieved approximately 70% of the strength measured for pure magnesium. The effect of tool geometry on microstructure and mechanical properties of Mgsteel welding was also studied (Chen and Nakata, 2009 Table 2. A comparison of tensile properties of selected magnesium alloys after friction stir welding with properties of parent alloys.…”

Section: Application To Magnesium Jointsmentioning

confidence: 99%

Welding and Joining of Magnesium Alloys

Czerwiński¹

2011

Magnesium Alloys - Design, Processing and Properties

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“…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. Our research group has obtained a certain strength connection joint with a lap configuration of setting steel on top of Mg by FSW and the lap shear tensile test results reach the highest value (9.98-11.75 kN), which is higher than most of joints welded by other methods.…”

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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Effect of tool geometry on microstructure and mechanical properties of friction stir lap welded magnesium alloy and steel

Cited by 163 publications

References 18 publications

Effect of tool geometry on friction stir spot welding of polypropylene sheets

Effect of tool geometry on friction stir spot welding of polypropylene sheets

Welding and Joining of Magnesium Alloys

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

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