Fabrication of Al/Mg/Al laminate by a porthole die co-extrusion process

Chen, Liang; Tang, Jianwei; Zhao, Guoqun; Zhang, Cunsheng; Chu, Xiaodong

doi:10.1016/j.jmatprotec.2018.03.027

Cited by 49 publications

(8 citation statements)

References 35 publications

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“…In the porthole die extrusion, the microstructure between the welding zone and matrix zone was different [ 6 , 7 , 8 , 9 ]. According to the study of He et al [ 20 ], if the microstructure was composed of two different grain sizes in two adjacent zones, deformation often propagated quickly and the material easily failed catastrophically at the interface because of the stress concentration.…”

Section: Resultsmentioning

confidence: 99%

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Microstructure and Its Influence on the Welding Quality of 6063 Aluminum Alloy Porthole Die Extrusion

Liu

et al. 2021

Materials

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Extrusion experiments and 3D numerical modeling were conducted to investigate the dynamic recrystallization and welding quality of a 6063 aluminum alloy hollow square tube extruded by a porthole die at the ram speeds of 3 mm/s, 7 mm/s, 9 mm/s and 11 mm/s. The results showed that average grain size of hollow square tube extruded at the ram speed of 7 mm/s was the smallest. The profile extruded at the ram speed of 3 mm/s exhibited the highest expansion ratio. Dynamic recrystallization (DRX) fractions were highly variable at different ram speeds. DRX fractions in the matrix zones were higher than those in the welding zones, resulting in smaller grain sizes in the matrix zones. Mechanical properties in the welding zones and matrix zones was different. A local strain concentration would occurred during expansion, which would affect the welding quality. Finally, it was found that the uniform microstructure near the welding line would also affect the welding quality.

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Section: Resultsmentioning

confidence: 99%

“…The Al/Mg/Al laminate was fabricated through a porthole die co-extrusion [ 7 ]. Partial DRX and an approximately complete DRX occurred in the Al layer and Mg layer, respectively.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Its Influence on the Welding Quality of 6063 Aluminum Alloy Porthole Die Extrusion

Liu

et al. 2021

Materials

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“…However, note that composites annealed at 300-350 °C present a continuous lamination interlayer (Figure 7d-e) and the IMCs thickness increases with increasing temperature. It is known that the diffusion in solid material can be described by Fick's second law, and the diffusion coefficient becomes higher with the increasing temperature [42]. Two distinct continuous intermetallic phases resulting from the elements' diffusion can be observed in the samples annealed It is known that the diffusion in solid material can be described by Fick's second law, and the diffusion coefficient becomes higher with the increasing temperature [42].…”

Section: Interfacial Microstructure and Rolling Simulation Of The Cormentioning

confidence: 99%

“…It is known that the diffusion in solid material can be described by Fick's second law, and the diffusion coefficient becomes higher with the increasing temperature [42]. Two distinct continuous intermetallic phases resulting from the elements' diffusion can be observed in the samples annealed It is known that the diffusion in solid material can be described by Fick's second law, and the diffusion coefficient becomes higher with the increasing temperature [42]. Two distinct continuous intermetallic phases resulting from the elements' diffusion can be observed in the samples annealed at 300 • C and 350 • C. The atom movements caused by strong external forces can drive accelerated diffusion in the material [43].…”

Section: Interfacial Microstructure and Rolling Simulation Of The Cormentioning

confidence: 99%

Microstructure Characterization and Mechanical Property of Mg/Al Laminated Composite Prepared by the Novel Approach: Corrugated + Flat Rolling (CFR)

Wang

Ren

et al. 2019

Metals

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In this paper, Mg/Al laminated composites were successfully prepared at 400 °C by corrugated + flat rolling (CFR) with reduction ratios of 35% and 25% and subsequent annealing treatments were conducted at 200–350 °C for 30 min. A two-dimensional model was established to analyze the strain distribution during the first corrugated rolling process. Simulation results indicated that severe plastic deformation was formed at trough positions, which included more numerous refined grains than in the peak positions. The interfacial microstructure and mechanical property of the flattened composites along the rolling direction (RD) and the transverse direction (TD) were investigated. The results revealed that longitudinal discontinuous and transverse continuous interfacial intermetallic compounds (IMCs) were observed of the flattened as-rolled sample. Spatial distribution was provided for the grain microstructure along the thickness and rolling direction for AZ31B magnesium alloys of the CFR as-rolled composite. Mechanical property results showed that the longitudinal ultimate tensile strength (UTS) and elongation (EL) of the as-rolled sample reached 255 MPa and 4.14%, respectively. The as-rolled UTS along TD reached 325 MPa, about 30% higher than that along the RD. After heat treatment, the anisotropy of mechanical properties remained. The microstructure evolution and mechanical properties were discussed in detail.

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“…[10,11] Plastic processing and preparation methods for composite plates such as extrusion compounding method explosive compounding method, hot rolling method, and rolling compounding method have emerged one after another. Chen et al [12] proposed a split die co-extrusion (PCE) process to prepare Al/Mg/Al laminates. The results show that there are no voids and cracks in the Al/Mg interface of the composite material.…”

Section: Introductionmentioning

confidence: 99%

Formability and interface structure of Al/Mg/Al composite sheet rolled by hard-plate rolling (HPR)

Huo

Wang

et al. 2021

Int J Adv Manuf Technol

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How to improve the bonding ability and quality perform between heterogeneous plates has always been one of the di cult issues that have long been concerned in the eld of high-performance heterogeneous composite plate forming and manufacturing. This paper proposes a new method for manufacturing heterogeneous composite panels-composite panels by hard-plate rolling (HPR). In addition to adding hard plates above and below the aluminum/magnesium/aluminum (Al/Mg/Al) composite slab, the research results of the hot rolling process of the composite plate with or without the hard plates at 40%, 60%, and 80% reduction show that the hard plates can be rolled During the manufacturing process, the shear stress in the rolling direction (RD) is partially converted into the compressive stress in the normal direction (ND), which then increases the welding pressure between the heterogeneous composite laminates, which can inhibit the occurrence of bending and edge cracks, and signi cantly improve the quality and shape of the board ability. At the same time, through the study of the interface structure of the composite plate, it can be known that metallurgical bonding can be achieved with a small reduction after the addition of the hard-plate, and two clear layers of Al 3 Mg 2 and Al 17 Mg 12 intermetallic compounds appear at the Al/Mg interface, and the thickness of the diffusion layer is uniform. Signi cantly larger than the traditional hot-rolled composite board, the thickness of the diffusion layer can reach 38µm under the condition of 60% reduction under the action of the hard-plate, the yield strength is 172.3MPa, and the elongation reaches 21.5%. In summary, the hot-rolled by hard-plate is high forming and manufacturing of performance heterogeneous composite panels provides a method.

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Fabrication of Al/Mg/Al laminate by a porthole die co-extrusion process

Cited by 49 publications

References 35 publications

Microstructure and Its Influence on the Welding Quality of 6063 Aluminum Alloy Porthole Die Extrusion

Microstructure and Its Influence on the Welding Quality of 6063 Aluminum Alloy Porthole Die Extrusion

Microstructure Characterization and Mechanical Property of Mg/Al Laminated Composite Prepared by the Novel Approach: Corrugated + Flat Rolling (CFR)

Formability and interface structure of Al/Mg/Al composite sheet rolled by hard-plate rolling (HPR)

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