Technology of explosive welding magnesium–aluminium composite joints

Trykov, Yu. P.; Шморгун, В. Г.; Рогозин, В. Д.; Dolgii, Yu G

doi:10.1533/wint.2003.3186

Cited by 9 publications

(4 citation statements)

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“…An opportunity to improve the workability and other properties of Mg alloys may be the introduction of aluminium layers to create a multilayer Al-Mg composite [3]. There are scientific premises that the joining of Mg and Al by explosive welding (EXW) [4] or by friction stir welding (FSW) [5] can lead to the fabrication of a composite structure or bi-metallic structures combining the excellent properties of these two metals.…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, it was found that melting and rapid solidification occur in a narrow zone at the interface which creates the possibility of intermetallic phase formation. In a later work [4], attempts were made to characterize the microstructure of the interface in Al/Mg composites produced by the EXW method. However, the authors did not find any reaction areas at the Al/Mg interface.…”

Section: Introductionmentioning

confidence: 99%

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Microstructural changes near the interface of eleven-layered AZ31/AA1050 composites fabricated by single-shot explosive welding

Puchlerska,

Paul,

Miszczyk

et al. 2024

J. Phys.: Conf. Ser.

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The evolution of the microstructure of reaction regions in as-welded and annealed states was thoroughly investigated by SEM and TEM in the eleven-layered AZ31/AA1050 composite plates fabricated via a single-shot explosive welding process. With the detonation velocities used, only the first and second interface is wavy, while the others are flat. Near all interfaces, local melting and rapid solidification processes lead to the formation of reaction regions composed of phases of different chemical compositions and structures. Even though 2 equilibrium phases of γ-Mg17Al12 and β-Mg3Al2 have been found a large part of the solidified melt region consists of non-equilibrium phases that exhibit an amorphous or ultrafine-grained structure. Further heat treatment of the multilayer composite resulted in rapid nucleation and growth of the γ-Mg17Al12 and β-Mg2Al3 phases in the form of hard layers. Within the pre-existing reaction regions, the systematic transformation of phases of different chemical compositions into one β-Mg2Al3 phase was observed. It was found that using a pressure of 3 MPa is very important in preventing delamination of the clad during heating, but it is not able to block the formation of the linear cracks in the β-Mg3Al2 phase, which crucially reduces the composite formability.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Microstructural changes near the interface of eleven-layered AZ31/AA1050 composites fabricated by single-shot explosive welding

Puchlerska,

Paul,

Miszczyk

et al. 2024

J. Phys.: Conf. Ser.

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“…Literature data shows that there are numerous methods of manufacturing these types of products [1][2][3][8][9][10][11]. However, the majority of those methods do not guarantee the satisfactory quality of the bond, the required thickness of the cladding layer and additionally, in the case of bimetallic bars, the uniform distribution of the cladding layer on the core perimeter.…”

Section: Introductionmentioning

confidence: 99%

Archives of Metallurgy and Materials

Mróz¹,

Stefanik²,

Szota³

2019

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The paper presents the results of the experimental tests of Mg/Al bimetallic bars rolling process in classic and multi-radial modified round-oval-round passes. The bimetallic bar consist of magnesium core, grade AZ31 and aluminium outer layer, grade 1050A. The stocks were round bars with diameter 22.5 mm with an aluminium layer share of 28%. As a result of rolling in four passes, bars of a diameter of about 17 mm were obtained. A bimetallic feedstock was manufactured using an explosive welding method. The use of the designed arrangement of multi-radial modified stretching passes resulted in obtaining Mg/Al bimetallic bars with an uniform distribution of the cladding layer over the bar perimeter and high quality of shear strength between individual layers compared to Mg/Al bars obtained in the classic passes.

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“…In these methods intermetallic compounds of the form of Al m Mg n were produced at the interface. In addition few studies have been done on the explosive welding of Mg alloys [6] and existence of zones of intermetallic is also reported. The dynamic strength of the weld is adversely affected by such rapidly cooled reacted zones containing brittle phases as well as microcracks [7].…”

Section: Introductionmentioning

confidence: 99%

Explosion Joining of Magnesium Alloy AZ31 and Aluminum

Ghaderi

Mori

Hokamoto

2007

MSF

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Explosion welding has produced a large number of dissimilar joints. But the explosion welding of materials of low impact toughness and brittle nature is considered to be difficult. Magnesium, with its HCP structure, has a low capacity for plastic deformation at room temperature and moreover it has a high chemical reactivity. Therefore, successful explosion welding of magnesium alloys, demands careful attention to be paid to prevent failure or formation of brittle reacted zones at the weld interface. Explosive welding of the wrought Mg-Al-Zn alloy and commercially pure aluminum is performed. The welds are analyzed through metallographic characterization and shear tests. High quality welds of the two materials possessing shear strength higher than the softer layer has been obtained.

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Technology of explosive welding magnesium–aluminium composite joints

Cited by 9 publications

References 0 publications

Microstructural changes near the interface of eleven-layered AZ31/AA1050 composites fabricated by single-shot explosive welding

Microstructural changes near the interface of eleven-layered AZ31/AA1050 composites fabricated by single-shot explosive welding

Archives of Metallurgy and Materials

Explosion Joining of Magnesium Alloy AZ31 and Aluminum

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