The influence of process parameters in friction stir welding of Al-Mg alloy and polycarbonate

Derazkola, Hamed Aghajani; Elyasi, Majid

doi:10.1016/j.jmapro.2018.07.021

Cited by 79 publications

(58 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The study of the hardness on the FSW parts is important in knowing the mechanical strength of the joints. 42 In our study, shore D hardness was measured using a Durometer (Yuzuki make) instrument. The tests were carried as per the ASTM D2240 standard.…”

Section: Resultsmentioning

confidence: 99%

Investigations on friction stir joining of 3D printed parts to overcome bed size limitation and enhance joint quality for unmanned aircraft systems

Tiwary

Ravi

Arunkumar

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part C:

View full text Add to dashboard Cite

3D printing technology is making its mark in automotive, aerospace, and bio-medical-related industries. It is considered a viable option for the direct manufacturing of final parts. However, it is not possible to print longer parts in a single attempt due to the bed size limitation of printers. This problem can be addressed by employing a polymer joining technique as a secondary operation. Moreover, low mechanical strength and inferior geometrical qualities like the flatness of the joined parts restrict its real-time industrial application. Here, an attempt is made to join a longer part (typical of an aircraft wing) using friction stir welding technique. Joining was performed on 3D printed similar/dissimilar thermoplastic parts. Tensile test results showed that friction stir welding of 3D printed parts (for both similar/dissimilar) produced relatively weaker joints compared to the base material. Various important process parameters of 3D printing and friction stir welding technique, namely part infill percentage, material combination, tool rotational speed, traverse speed, and tool pin taper angle were optimized by means of ANOVA. Optimization was aimed at maximizing the weld strength, elongation, hardness, and desired flatness. The results suggested that the material combination and tool pin taper angle play a significant role in the weld's strength as well as its geometric properties (flatness). The results were validated by adopting the optimized parameters for successful joining of the wing section of an unmanned aerial vehicle. A span of 320 mm, with a metrological acceptable flatness value of 0.41 µ/m could be successfully achieved on an existing 3D printer whose bed size limit was 240 mm.

show abstract

Section: Resultsmentioning

confidence: 99%

Investigations on friction stir joining of 3D printed parts to overcome bed size limitation and enhance joint quality for unmanned aircraft systems

Tiwary

Ravi

Arunkumar

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part C:

View full text Add to dashboard Cite

show abstract

“…Friction stir welding is a thermo-mechanical process involving a non-consumable rotating tool that locally softens the underlying material through heat produced by frictional and plastic work. This enables the softened material to be stirred leading to the weld achievement [12]. The process was patented in 1991 by The Welding Institute (TWI) for the joining of aluminum alloys [13].…”

Section: Friction Stir Weldingmentioning

confidence: 99%

Friction Stir Welding and Friction Spot Stir Welding Processes of Polymers—State of the Art

2020

Self Cite

View full text Add to dashboard Cite

In the last decade, the friction stir welding of polymers has been increasingly investigated by the means of more and more sophisticated approaches. Since the early studies, which were aimed at proving the feasibility of the process for polymers and identifying suitable processing windows, great improvements have been achieved. This owes to the increasing care of academic researchers and industrial demands. These improvements have their roots in the promising results from pioneer studies; however, they are also the fruits of the adoption of more comprehensive approaches and the multidisciplinary analyses of results. The introduction of instrumented machines has enabled the online measurement of processing loads and temperature, and critical understanding of the principal aspects affecting the material flow and welds quality. Such improvements are also clearly demonstrated by the increase of the strength of recent joints (up to 99% of joining efficiency) as compared to those reached in early researches (almost 47%). This article provides a comprehensive review of the recent progresses on the process fundamentals, quality assessment and the influence of process parameters on the mechanical behavior. In addition, emphasis is given to new developments and future perspectives.

show abstract

“…The workpieces are intermixed mechanically by the traverse movement of the tool along the joint line, and mechanical pressure forms the smooth material [10,11]. At first, the FSW process was used for aluminum alloys [6,[12][13][14]; however over time, the capacity and potential of FSW proved that this method could be employed not only for aluminum alloys, but also for other purposes such as joining of similar and dissimilar polymeric and metallic materials [15][16][17][18][19][20][21][22][23][24][25]. One of the useful structures that can be made by FSW is a steel-aluminum dissimilar joint [12,26,27].…”

Section: Introductionmentioning

confidence: 99%

Effects of Rapid Cooling on Properties of Aluminum-Steel Friction Stir Welded Joint

et al. 2021

View full text Add to dashboard Cite

In this study, dissimilar sheets including AA3003 aluminum and A441 AISI steel were welded via cooling-assisted friction stir welding (FSW). Three different cooling mediums including forced CO2, forced water, and forced air were employed, and a non-cooled sample was processed to compare the cooling-assisted condition with the traditional FSW condition. The highest cooling rate belongs to CO2 and the lowest cooling rate belongs to the non-cooled sample as FSW. The best macrograph without any segregation at interface belongs to the water-cooled sample and the poorest joint with notable segregation belongs to the CO2 cooling FSW sample. The CO2 cooling FSW sample exhibits the smallest grain size due to the suppression of grain growth during dynamic recrystallization (DRX). The intermetallic compound (IMC) thickening was suppressed by a higher cooling rate in CO2 cooling sample and just Al-rich phase was formed in this joint. The lowest cooling rate in the FSW sample exhibits formation of the Fe rich phase. The IMC layers were thicker at the top of the weld due to closeness with the heat generation source. The water cooling sample exhibits the highest tensile strength due to proper mechanical bonding simultaneously with optimum IMC thickness to provide appropriate metallurgical bonding. Fractography observation indicates that there is a semi-ductile fracture in the water cooling sample and CO2 cooling sample exhibits more brittle fracture. Hardness evaluation reveals that the higher the cooling rate formed, the higher the hardness in stir zone, and hardness changes in the aluminum side were higher than the steel side.

show abstract

The influence of process parameters in friction stir welding of Al-Mg alloy and polycarbonate

Cited by 79 publications

References 47 publications

Investigations on friction stir joining of 3D printed parts to overcome bed size limitation and enhance joint quality for unmanned aircraft systems

Investigations on friction stir joining of 3D printed parts to overcome bed size limitation and enhance joint quality for unmanned aircraft systems

Friction Stir Welding and Friction Spot Stir Welding Processes of Polymers—State of the Art

Effects of Rapid Cooling on Properties of Aluminum-Steel Friction Stir Welded Joint

Contact Info

Product

Resources

About