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Nanoporous Al sandwich foils using size effect of Al layer thickness during Cu/Al/Cu laminate rolling

Journal Article


Abstract


  • The roll bonding technique is one of the most widely used methods to produce metal laminate sheets. Such sheets offer interesting research opportunities for both scientists and engineers. In this paper, we report on an experimental investigation of the ‘thickness effect’ during laminate rolling for the first time. Using a four-high multifunction rolling mill, Cu/Al/Cu laminate sheets were fabricated with a range of thicknesses (16, 40, 70 and 130 μm) of the Al layer. The thickness of the Cu sheets was a constant 300 μm. After rolling, TEM images show good bonding quality between the Cu and Al layers. However, there are many nanoscale pores in the Al layer. The fraction of nanoscale pores in the Al layer increases with a reduction in the Al layer thickness. The finite element method was used to simulate the Cu/Al/Cu rolling process. The simulation results reveal the effect of the Al layer thickness on the deformation characteristics of the Cu/Al/Cu laminate. Finally, we propose that the size effect of the Al layer thickness during Cu/Al/Cu laminate rolling may offer a method to fabricate ‘nanoporous’ Al sandwich laminate foils. Such foils can be used in electromagnetic shielding of electrical devices and noisy shielding of building.

Publication Date


  • 2018

Citation


  • Yu, H., Lu, C., Tieu, A. Kiet., Li, H., Godbole, A. & Kong, C. (2018). Nanoporous Al sandwich foils using size effect of Al layer thickness during Cu/Al/Cu laminate rolling. Philosophical Magazine, 98 (17), 1537-1549.

Scopus Eid


  • 2-s2.0-85042926645

Number Of Pages


  • 12

Start Page


  • 1537

End Page


  • 1549

Volume


  • 98

Issue


  • 17

Place Of Publication


  • United Kingdom

Abstract


  • The roll bonding technique is one of the most widely used methods to produce metal laminate sheets. Such sheets offer interesting research opportunities for both scientists and engineers. In this paper, we report on an experimental investigation of the ‘thickness effect’ during laminate rolling for the first time. Using a four-high multifunction rolling mill, Cu/Al/Cu laminate sheets were fabricated with a range of thicknesses (16, 40, 70 and 130 μm) of the Al layer. The thickness of the Cu sheets was a constant 300 μm. After rolling, TEM images show good bonding quality between the Cu and Al layers. However, there are many nanoscale pores in the Al layer. The fraction of nanoscale pores in the Al layer increases with a reduction in the Al layer thickness. The finite element method was used to simulate the Cu/Al/Cu rolling process. The simulation results reveal the effect of the Al layer thickness on the deformation characteristics of the Cu/Al/Cu laminate. Finally, we propose that the size effect of the Al layer thickness during Cu/Al/Cu laminate rolling may offer a method to fabricate ‘nanoporous’ Al sandwich laminate foils. Such foils can be used in electromagnetic shielding of electrical devices and noisy shielding of building.

Publication Date


  • 2018

Citation


  • Yu, H., Lu, C., Tieu, A. Kiet., Li, H., Godbole, A. & Kong, C. (2018). Nanoporous Al sandwich foils using size effect of Al layer thickness during Cu/Al/Cu laminate rolling. Philosophical Magazine, 98 (17), 1537-1549.

Scopus Eid


  • 2-s2.0-85042926645

Number Of Pages


  • 12

Start Page


  • 1537

End Page


  • 1549

Volume


  • 98

Issue


  • 17

Place Of Publication


  • United Kingdom