Mechanical, electrochemical and structural characteristics of friction stir spot welds of aluminium alloy 6063

Mulaba-Kapinga, Delphine; Nyembwe, Kasongo; Ikumapayi, Omolayo M.; Akinlabi, Esther Titilayo

doi:10.1051/mfreview/2020022

Cited by 10 publications

(4 citation statements)

References 29 publications

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“…The percentage elongations for the weldment were also induced by microstructural evolution in the welded joint due to a rise in heat flux (Daniolos & Pantelis, 2017). The bonding precipitates are coarsened, owing to weaker grain bonding, thereby reducing the welds' tensile strength as reported in (Abolusoro et al, 2020;Mulaba-Kapinga et al, 2020).…”

Section: Tensile Strength Evaluationmentioning

confidence: 97%

Evaluation of mechanical properties of dissimilar aluminium alloys during friction stir welding using tapered tool

et al. 2021

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This study examined the effect of AISI H13 steel-tapered tool on the dissimilar friction stir welding of 7075-T651 and 1200-H19 aluminium alloys. Three mechanical tests which include hardness, tensile strength and impact energy were conducted to study the effect of tilt angle, rotational and welding speeds on the weld integrities, 50 and 175 HV were respectively obtained as hardness values for AA1200-H19 and AA 7075-T651, the hardness values were measured for three selected welding speeds of 30, 60 and 90 mm/min representing low, medium and high at a constant rotational speed of 1500 rpm, a tool tilt angle of 2°.The hardness increases with the welding speed from 81.99 to 98.5 HV as the speed increased from 30 to 60 mm/min and dropped to 77 HV at 90 mm/min.The impact energy increased from 12.9 to 21.4 J with an increase in the welding speed from 30 to 60 mm/min and dropped to 5.4 J at 90 mm/min.The ultimate tensile strength (UTS) increased from 126.04 to 151.54 MPa with an increase in the welding speed from 30-60 mm/min and decreased from 151.54 to 128.37 MPa, the hardness at 1500 rpm and 60 mm/min increased from 70.22 to 98.58 HV with an increase in the tilt angle from 1-2 � , a further increase from 2-3 o reduced the hardness from 98.58 to

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Section: Tensile Strength Evaluationmentioning

confidence: 97%

Evaluation of mechanical properties of dissimilar aluminium alloys during friction stir welding using tapered tool

et al. 2021

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“…The compressive strength of construction material is a measure of its ability to withstand loads tending to reduce its size. Compression strength test was carried out on Universal Testing Machine using sample size of 15 x 15 x 15 mm in accordance with ASTM C39 test standard (Mulaba-Kapinga et al, 2020). Each sample of the composite was placed between two compression platens to introduce compressive load to the material.…”

Section: Compressive Strength Testmentioning

confidence: 99%

Effect of particle size and weight percentage variation on the mechanical properties of periwinkle shell reinforced polymer (epoxy resin) matrix composite

Udo

Afolalu

Ikumapayi³

et al. 2022

Int. J. Appl. Sci. Eng.

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Polymers are very interesting and useful materials that have many applications in various areas of engineering. Composites formed with these materials are known to exhibit outstanding mechanical, electrical, and thermal properties. In this work, a polymer, epoxy resin, was reinforced with a biodegradable material, periwinkle shell (PWS) particles, using the hand lay-up method. The PWS was pulverized using a ball mill and three sieve sizes of the PWS (75, 150, and 300 µm) were sieved out. Various samples of the composite were produced by reinforcing the epoxy resin matrix with 10, 20, 30, 40, and 50 wt% of each of the PWS particle sieve sizes. The samples so formed were subjected to the following mechanical tests: hardness, tensile, compressive, and impact tests. It was found out that the samples of composites showed higher values of the parameters tested for than ordinary epoxy resin showed. In the samples of composites, it was found that the samples with a higher weight percentage of the PWS reinforcement recorded higher values of those mechanical properties tested for. The higher the weight percentage of the PWS in the composite, the greater the value of the mechanical property tested for.

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“…This eventually introduces potential failure sites, which undermine the integrity of the welded joint. However, friction stir welding (FSW) helps to address the associated challenges [3]. This welding process produces high-quality welds at optimized energy consumption in the absence of gas or flux; hence, it is a safer and more eco-friendly process.…”

Section: Introductionmentioning

confidence: 99%

Microstructural and corrosion behaviours of dissimilar friction stir welded aluminium alloys

Attah,

Medupin,

Ipilakyaa

et al. 2024

Manufacturing Rev.

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In this study, the friction stir welding (FSW) process was employed to investigate the effect of tool geometry on the corrosion behaviour and microstructure of friction stir welded AA7075-7651 and AA1200-H19 using Central Composite Design. The workpieces were machined and welded, and the interfaces were milled. A 2-level full factorial experimental design was deployed using Response Surface Methodology (RSM). A rotational speed of 1500 rpm, welding speed of 30, 60, and 90 mm/min, and a 2° tilt angle of the tool with a plunge force of 7 kN were utilized. The results show that regardless of the tool geometry, multi-response optimum weldment can be achieved at 60 mm/min welding speed and a tilt angle. The microstructure of the optimal weldments presents an ‘onion ring’ pattern, indicating proper mixing of the alloys during FSW. Analysis of the corrosion behaviour revealed a decrease in the polarization resistance when the transverse speed increased from 30 to 90 mm/min, as polarization resistance has a direct relationship with corrosion rate. It can be concluded that FSW ensures excellent weldment, as evident in the microstructural evolution of the resulting weldments, and that tool geometry plays a significant role in the corrosion inhibition efficiency of the alloys.

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Mechanical, electrochemical and structural characteristics of friction stir spot welds of aluminium alloy 6063

Cited by 10 publications

References 29 publications

Evaluation of mechanical properties of dissimilar aluminium alloys during friction stir welding using tapered tool

Evaluation of mechanical properties of dissimilar aluminium alloys during friction stir welding using tapered tool

Effect of particle size and weight percentage variation on the mechanical properties of periwinkle shell reinforced polymer (epoxy resin) matrix composite

Microstructural and corrosion behaviours of dissimilar friction stir welded aluminium alloys

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