Evaluation of diffusion welding of 6061 aluminum and AZ31 magnesium alloys without using an interlayer

Jafarian, Mojtaba; Khodabandeh, Alireza; Manafi, Sahebali

doi:10.1016/j.matdes.2014.09.020

Cited by 82 publications

(32 citation statements)

References 23 publications

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“…When the concentration of atoms reached at the condition of chemical reaction, the new compound phase was formed. This is in accordance with the results of other researches that show, intermetallic compounds are mainly sequentially formed and the second phase begins to germinate and grows just when the first phase reaches a certain thickness [20][21]. Microstructural examination also showed some grain coarsening within the magnesium alloy in regions adjacent to the bond interface, Figure 3.…”

Section: Resultssupporting

confidence: 91%

Effect of bonding temperature on microstructure and intermetallic compound formation of diffusion bonded magnesium/aluminum joints

Mofid

Loryaei

2020

Materialwissenschaft Werkst

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The diffusion bonding of two dissimilar alloys Aluminum 5083 and Magnesium AZ31 was carried out at 420°C, 430°C,440°C and 450°C for bonding time of 60 min. In order to characterize the microstructure evolution in the joint zone, scanning electron microscopy, energy dispersive spectroscopy and x-ray diffraction were applied. The results show that joint formation is attributed to the solid-state diffusion of magnesium and aluminum into Aluminum 5083 and Magnesium AZ31 alloys followed by eutectic formation and constitutional liquation along the interface. At bonding temperature of 430°C diffusion induced grain coarsening was observed at the interface. With increase in bonding temperature, the atomic diffusivity increases, results in easier and speeder chemical bonding. In bonding temperature of 440°C the weld had an irregular shaped region in the weld center, having a different microstructure from the two base materials. The irregular shaped region contained a large volume of intermetallic compound Al 12 Mg 17 and showed significantly higher hardness in the weld center. The present study suggests that constitutional liquation resulted in the intermetallic compound Al 12 Mg 17 in the weld center.Keywords: Diffusion bond / aluminum alloy / magnesium alloy / microstructure / intermetallic Schlüsselwörter: Diffusionsbindung / Aluminiumlegierung / Magnesiumlegierung / Gefüge / intermetallisch Effect of bonding temperature on microstructure and intermetallic compound formation Materialwiss. Werkstofftech.

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Section: Resultssupporting

confidence: 91%

Effect of bonding temperature on microstructure and intermetallic compound formation of diffusion bonded magnesium/aluminum joints

Mofid

Loryaei

2020

Materialwissenschaft Werkst

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“…On the one hand, the weight of aluminium alloy in the same volume can be reduced, andonthe other hand, the poor corrosion resistance of magnesium alloy will be overcome. The two materials benefit from each other in terms of performance and produce a synergistic effect, which makes the composite plate better than the original material, thus rendering it more able to meet various demands imposed by use in most applications [6][7][8][9][10][11] .…”

Section: Introductionmentioning

confidence: 99%

Effect of Annealing Process on the Microstructures and Mechanical Properties of AZ31B/A356 Composite Plate Fabricated by Cast Rolling

Yang

Dong

et al. 2019

Mat. Res.

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“…Complex structure of aluminum-magnesium used in engines and components of spacecrafts 2) . Therefore, achievement to reliable bonding between dissimilar metals of aluminum/magnesium can be used in different functions 3) . At the moment, access to bonding between these two metals is very difficult.…”

Section: Introductionmentioning

confidence: 99%

“…These Mg-Al binary IMCs include Mg 17 Al 12 and Mg 2 Al 3 4) . These hard and brittle compounds are known to cause the poor performance in the joints [1][2][3][4] . In particular, the bonding of Al and Mg alloys is not possible by classical welding methods because of unexpected phase formation in the joint area.…”

Section: Introductionmentioning

confidence: 99%

“…These materials are usually joined at elevated temperatures, between 0.5 and 0.8 of the absolute melting point, using a defined contact pressure with a joining time ranging from a few minutes to a few hours 6) . Vacuum diffusion bonding can precisely regulate heating temperature and holding time, and then control the forming of intermetallic compounds 3) .…”

Section: Introductionmentioning

confidence: 99%

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Formation of Intermetallic Compounds at the Interface of the Friction Stir Weld and Diffusion Bond of Mg-AZ31/Al-5083 Joint

Mofid

Loryaei

Heidary

2019

Journal of Welding and Joining

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Dissimilar Friction stir and Diffusion bond welds of Al alloy 5083 and Mg alloy AZ31 were produced. The maximum temperature at the advancing side of friction stir weld rose to a maximum of 435℃. This temperature was selected as the bonding temperature, for diffusion bonding of these two alloys. The diffusion bonding time was 60 min. Scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and X-ray diffraction (XRD) were used to investigate the compositional changes across the joint region. Dissimilar FS weld, produced layers of new phases of Al 12 Mg 17 and Al 3 Mg 2 intermetallics. DB weld, produced a melted-andsolidified eutectic structure consists a hypo-eutectic structure in the middle of the joint and a two layer structure between the eutectic and the Al base. The shear strength of joint corresponding to DB welded specimen was 43.2 MPa. The tensile strength of joint corresponding to FS welded specimen was 51.3 MPa. The present study suggests that constitutional liquation resulted in the intermetallic compound formation in the weld center.

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Evaluation of diffusion welding of 6061 aluminum and AZ31 magnesium alloys without using an interlayer

Cited by 82 publications

References 23 publications

Effect of bonding temperature on microstructure and intermetallic compound formation of diffusion bonded magnesium/aluminum joints

Effect of bonding temperature on microstructure and intermetallic compound formation of diffusion bonded magnesium/aluminum joints

Effect of Annealing Process on the Microstructures and Mechanical Properties of AZ31B/A356 Composite Plate Fabricated by Cast Rolling

Formation of Intermetallic Compounds at the Interface of the Friction Stir Weld and Diffusion Bond of Mg-AZ31/Al-5083 Joint

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