Dissimilar friction stir welding of 6061 Al to 316 stainless steel using Zn as a filler metal

Zheng, Qixian; Feng, Xin; Shen, Yifu; Huang, Guoqiang; Pei, Zhao

doi:10.1016/j.jallcom.2016.06.092

Cited by 116 publications

(52 citation statements)

References 18 publications

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“…The previous works on the friction welding of steel to 6061 aluminum alloy using a lap joint configuration were limited to a few investigations [11][12][13], but these studies were focused on coated steel for a specific application.…”

Section: Introductionmentioning

confidence: 99%

Friction Stir Welding of Dissimilar Materials Aluminum AL6061-T6 to Ultra Low Carbon Steel

Boumerzoug

Helal

2017

Metals

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Abstract:In this study, the microstructure and strength properties of friction stir welded 6061-T6 aluminum alloy to ultra-low carbon steel have been investigated using different advancing speeds of 100, 200, and 400 mm·min −1 at constant rotation rate. Microstructure observations have been conducted by optical and scanning electron microscopy. The joint strength was evaluated on a tensile testing machine. The effect of advancing speed on the shear load of a joint has been found, as well as a relationship between microstructures and mechanical properties.

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Section: Introductionmentioning

confidence: 99%

Friction Stir Welding of Dissimilar Materials Aluminum AL6061-T6 to Ultra Low Carbon Steel

Boumerzoug

Helal

2017

Metals

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“…Therefore, sound joints can be obtained at lower heat input [60]. Zheng et al [57] stated that the insertion of Zn foils between AA6061 and 316 stainless steel help avoid the formation of Al/Fe IMCs, thereby increasing joint strength (from 3.1 kN to 5.6 kN). Ratanathavorn et al [58] investigated the influence of Zn coating of DP1000 ultra high strength steel The occurrence of Al/Fe IMCs is a typical issue of dissimilar FSW of aluminum alloys and steels, whose nature and size depend on welding parameters.…”

Section: Recommendations and Challenges In Fsw Of Aluminum Alloys Andmentioning

confidence: 99%

“…Therefore, heat input should be reduced as much as possible to limit IMCs, ensuring adequate metal intermixing at the same time. In this context, some studies have proposed the use intermediate Zn layers between aluminum and steel sheets [57][58][59] to reduce IMCs in Al/steel joints ( Figure 24). These layers could be used as Zn foils or Zn coating of galvanized steels.…”

Section: Recommendations and Challenges In Fsw Of Aluminum Alloys Andmentioning

confidence: 99%

Main Issues in Quality of Friction Stir Welding Joints of Aluminum Alloy and Steel Sheets

Safeen

Spena

2019

Metals

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Joining of aluminum alloys through friction stir welding (FSW) is effectively employed in several industries (e.g., aeronautics and aerospace) since it guarantees proper weld strength as compared to other joining technologies. Contrarily, dissimilar FSW of aluminum alloys and steels often poses important issues in the selection of welding parameters due to the difficulty to join different materials. Improper welding parameters give rise to the formation of intermetallic compounds, and internal and external defects (e.g., tunnel formation, voids, surface grooves, and flash). Intermetallic compounds are brittle precipitates of Al/Fe, which chiefly initiate crack nucleation, whereas internal and external defects mainly act as stress concentration factors. All these features significantly reduce joint strength under static and dynamic loading conditions. With reference to the literature, the influence of main welding parameters (rotational speed, welding speed, tool geometry, tilt angle, offset distance, and plunge depth) on the formation of intermetallic compounds and defects in FSW of aluminum alloys and steels is discussed here. Possible countermeasures to avoid or limit the above-mentioned issues are also summarily reported.

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“…Dissimilar metals welding is an important technology in the modern industry. It is characterized by the ability to maximize the use of a variety of advantages of materials for industrial production [1][2][3][4][5]. The effective connection of Ti/Cu dissimilar materials not only meets the requirements of thermal conductivity, electrical conductivity, corrosion resistance and wear resistance, but also meets the requirements of high strength but light weight.…”

Section: Introductionmentioning

confidence: 99%

Study on strengthening mechanism of Ti/Cu electron beam welding

et al. 2017

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Welding-brazing method is widely used for dissimilar metals welding. However, it is becoming increasingly difficult to further improve the connection strength by controlling the formation of the transition layer. In this study, an innovative welding method referred to as adjacent welding was addressed, which greatly improved the tensile strength of Ti/Cu dissimilar joint. The strength of new joint could reach up to 89% that of copper base metal, compared to the use of a traditional welding-brazing method which strength coefficient is within the limit of 70%. In order to determine the strengthening mechanism of adjacent welding, optical microscopy, SEM, EDS and XRD were applied for the analysis of microstructure and phase structure. Furthermore, tensile strength was also tested. The results show that due to the process of remelting and reverse solidification of intermetallic compounds (IMCs) layer, a less complex and thinner IMCs layer was formed and TiCu (553HV) with high embrittlement existing in the front of titanium substrate was changed into Ti2Cu (442HV). Performances of joints were optimized by these changes. An interpretation module was presented for the mechanism.

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Dissimilar friction stir welding of 6061 Al to 316 stainless steel using Zn as a filler metal

Cited by 116 publications

References 18 publications

Friction Stir Welding of Dissimilar Materials Aluminum AL6061-T6 to Ultra Low Carbon Steel

Friction Stir Welding of Dissimilar Materials Aluminum AL6061-T6 to Ultra Low Carbon Steel

Main Issues in Quality of Friction Stir Welding Joints of Aluminum Alloy and Steel Sheets

Study on strengthening mechanism of Ti/Cu electron beam welding

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