Investigating microstructural evolution at the interface of friction stir weld and diffusion bond of Al and Mg alloys

Mofid, Mohammad Ammar; Loryaei, E.

doi:10.1016/j.jmrt.2019.06.049

Cited by 37 publications

(9 citation statements)

References 18 publications

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“…Secondary precipitation phases were mainly observed in the inter-dendritic area, Figure 11. Similar results are reported by Mofid et al They recorded two inter-metallic compounds in the weld metal, namely, β-Al 3 Mg 2 and γ-Al 12 Mg 17[68]. Goswami et al detected the β-phase through high-resolution TEM analysis[30].…”

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confidence: 74%

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The Effect of Process Parameters on the Microstructure and Mechanical Properties of AW5083 Aluminum Laser Weld Joints

Vyskoč

Dománková

Jurči

et al. 2020

Metals

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In this article, the effect of process parameters on the microstructure and mechanical properties of AW5083 aluminum alloy weld joints welded by a disk laser were studied. Butt welds were produced using 5087 (AlMg4.5MnZr) filler wire, with a diameter of 1.2 mm, and were protected from the ambient atmosphere by a mixture of argon and 30 vol.% of helium (Aluline He30). The widest weld joint (4.69 mm) and the highest tensile strength (309 MPa) were observed when a 30 L/min shielding gas flow rate was used. Conversely, the narrowest weld joint (4.15 mm) and the lowest tensile strength (160 MPa) were found when no shielding gas was used. The lowest average microhardness (55.4 HV0.1) was recorded when a 30 L/min shielding gas flow rate was used. The highest average microhardness (63.9 HV0.1) was observed when no shielding gas was used. In addition to the intermetallic compounds, β-Al3Mg2 and γ-Al12Mg17, in the inter-dendritic areas of the fusion zone (FZ), Al49Mg32, which has an irregular shape, was recorded. The application of the filler wire, which contains zirconium, resulted in grain refinement in the fusion zone. The protected weld joint was characterized by a ductile fracture in the base material (BM). A brittle fracture of the unshielded weld joint was caused by the presence of Al2O3 particles. The research results show that we achieved the optimal welding parameters, because no cracks and pores were present in the shielded weld metal (WM).

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confidence: 74%

“…A slight heterogeneity in the precipitate density, as well as the dislocation density, was also observed. [68]. Goswami et al detected the β-phase through high-resolution TEM analysis [30].…”

Section: Transmission Electron Microscope (Tem) Analysismentioning

confidence: 99%

The Effect of Process Parameters on the Microstructure and Mechanical Properties of AW5083 Aluminum Laser Weld Joints

Vyskoč

Dománková

Jurči

et al. 2020

Metals

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“…Friction welding method is able to overcome economically for similar or dissimilar metal combinations (Nicholas, Jessop and Dindsdale, 1978). In the joint area an interface bond occurs and forms an intermetallic phase Al12Mg17 in aluminium alloys welded with Magnesium alloys (Mofid and Loryaei, 2019). The formation of intermetallic compounds is affected by the amount of frictional heat which in turn can affect the mechanical properties of the joint (Mehta, 2019).…”

Section: Introductionmentioning

confidence: 99%

Interface Structure in Friction Welded Joints between Stainless Steel 304 and Mild Carbon Steel

Purwanto

2022

JCPMT

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Friction welding is a solid-state welding process using heat generated through friction. Dissimilar materials can be joined properly with friction welding. This study is a continuation of the previous study and aimed to determine the interface structure occurred on stainless steel and carbon steel joints. Stainless steel 304 and mild carbon steel are joined with this method at 2000 rpm rotation for 15 seconds and forging time of 5 seconds with a pressure of 5 MPa. The results of a micro-observation using a scanning electron microscope show good bonding in the interface area. The carbon steel is more welded to the stainless steel in the periphery than in the center. The spectrum results of Energy Dispersive X-Ray of the interface show Fe, C and Cr elements content. This is what causes the strong welding bond.

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“…Furthermore, some scholars believe that the existence of the IMCs is attributed to the eutectic reaction [11,26,27]. It has been observed that the lamellar eutectic structures (Mg + Al 12 Mg 17 ) are formed in the Al/Mg FSW joints, as indicated in Figure 3.…”

Section: Metallurgical Issues Of Al/mg Fswmentioning

confidence: 99%

Friction stir welding of aluminium to magnesium: A critical review

Mao

et al. 2022

Materials Science and Technology

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Aluminium/magnesium hybrid structure has been paid increasing attention recently due to its excellent lightweight. However, aluminium/magnesium is easy to form pores, cracks, and massive intermetallic compounds when fusion welding is used. Friction stir welding is as solid-state method, which avoids the above-mentioned problems caused by fusion welding. This article systematically reviews recent progress in friction stir welding of aluminium/magnesium from temperature field, metal flow and weld composition. Moreover, the effects of control parameters on the temperature field, metal flow and weld composition are discussed objectively, respectively. Finally, this work puts forward some problems that need to be solved urgently in the future based on summarising the recent progress of friction stir welding of aluminium/magnesium.

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Investigating microstructural evolution at the interface of friction stir weld and diffusion bond of Al and Mg alloys

Cited by 37 publications

References 18 publications

The Effect of Process Parameters on the Microstructure and Mechanical Properties of AW5083 Aluminum Laser Weld Joints

The Effect of Process Parameters on the Microstructure and Mechanical Properties of AW5083 Aluminum Laser Weld Joints

Interface Structure in Friction Welded Joints between Stainless Steel 304 and Mild Carbon Steel

Friction stir welding of aluminium to magnesium: A critical review

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