Cold Extrusion Forming of Copper/Aluminum Clad Composite

Luo, Jun; Xu, Yan; Zhao, Shuang Jing

doi:10.4028/www.scientific.net/amm.16-19.441

Cited by 5 publications

(1 citation statement)

References 7 publications

(6 reference statements)

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“…New casting-extrusion technology aims to improve the metallurgical bonding between copper and aluminum has been presented by authors [12,13]. The technology can achieve metallurgy combination at atom levels in copper/ aluminum interface, and improve the quality of Al/Cu clad composite.…”

Section: Introductionmentioning

confidence: 99%

Stress and Strain Analysis and Microstructure of Al/Cu Clad Composite Fabricated by Cold Extrusion

Luo

Xue

Liu

et al. 2016

Archives of Metallurgy and Materials

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StreSS and StraIn analySIS and MIcroStructure oF al/cu clad coMpoSIte FabrIcated by cold extruSIonA five-zone describing model for extrusion of aluminum/copper clad composite was established. Stress and strain were also analyzed by finite element method. The distribution rules of grain size were researched by critical shear strain theory, and zoning phenomenon of grain size was discovered. The grain size of deformed aluminum material becomes gradually finer from center to the interface. The grain size is much fine and the critical shear strain reaches the maximum value in the interface. The grain size of copper material reduces gradually from center to both the interface and exterior surface, which is caused by the higher value of critical shear strain in the interface and exterior surface. The analysis results were verified by microstructure observation and mechanical properties test, indicating that the distribution of grain size for cold extrusion forming can be interpreted by critical shear strain theory.

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Section: Introductionmentioning

confidence: 99%

Stress and Strain Analysis and Microstructure of Al/Cu Clad Composite Fabricated by Cold Extrusion

Luo

Xue

Liu

et al. 2016

Archives of Metallurgy and Materials

View full text Add to dashboard Cite

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Microstructure of aluminum/copper clad composite fabricated by casting-cold extrusion forming

Luo

Zhao

Zhang

2011

J. Cent. South Univ. Technol.

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An aluminum/copper clad composite was fabricated by the casting-cold extrusion forming technology and the microstructures of the products were observed and analyzed. It is found that aluminum grains at the interface are refined in the radial profiles of cone-shaped deformation zone, but the grains in the center maintain the original state and the grain size is non-uniform. A clear boundary presents between the refined area and center area. In contrast, the copper grains in the radial profiles have been significantly refined. In the center area of the copper, the grains are bigger than those at the boundary. On the surface of the deformable body, the grain size is the smallest, but with irregular grain morphology. After the product is entirely extruded, all the copper and aluminum grains are refined with small and uniform morphology. In the center area, the average diameter of aluminum grains is smaller than 5 μm, and the copper grain on the surface is about 10 μm. At the interface, the grain size is very small, with a good combination of copper and aluminum. The thickness of interface is in the range of 10−15 μm. Energy spectrum analysis shows that CuAl 3 phase presents at the interface.

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Casting-cold extrusion of Al/Cu clad composite by copper tubes with different sketch sections

Luo

Zhao

Zhang

2012

J. Cent. South Univ. Technol.

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Cold Extrusion Forming of Copper/Aluminum Clad Composite

Cited by 5 publications

References 7 publications

Stress and Strain Analysis and Microstructure of Al/Cu Clad Composite Fabricated by Cold Extrusion

Stress and Strain Analysis and Microstructure of Al/Cu Clad Composite Fabricated by Cold Extrusion

Microstructure of aluminum/copper clad composite fabricated by casting-cold extrusion forming

Casting-cold extrusion of Al/Cu clad composite by copper tubes with different sketch sections

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