The Deformation of Clad Aluminum Sheet Produced By Direct Chill Casting

Abstract

The tensile and bending response of AA3003/AA6111 sheet produced by direct chill casting has been investigated. It is shown that the interface strength of the clad sheet has a minimum value of 175 MPa, and failure does not occur in the interface. The yield strength of the clad sheet obeys the rule of mixtures, and up to a cladding thickness of 100 lm-which was the thickest investigated-the work hardening behavior and tensile response are essentially unaffected by the presence of the cladding. The bending response of the sheet is improved greatly by the presence of ductile cladding, which was the case for prestrained and aged sheet. Under bending, failure is initiated in the lower bendability core and then eventually propagates through the more ductile cladding, which yields the final bend failure.

Through-thickness recrystallization characteristics of a laminated AA3xxx–AA6xxx aluminum alloy system

“…A laminated Al sheet, with an Al-Mn (AA3xxx) alloy as the clad layer and an Al-Mg-Si-Cu (AA6xxx) alloy as the core, has demonstrated significantly enhanced ductility/bendability compared to its monolithic AA6xxx alloy sheet [1]. The co-casting process used to fabricate the laminate leads to the formation of a compositional gradient at the interface between the two alloy layers [1].…”

“…The co-casting process used to fabricate the laminate leads to the formation of a compositional gradient at the interface between the two alloy layers [1]. Although high temperature exposures, such as solutionizing treatment processes, drastically alter the compositional characteristics of the hot rolled AA3xxx-AA6xxx laminate, the interface region maintains a sharp gradient in the solute content even after thermomechanical processing to fabricate rolled products [2,3].…”

Numerical study of surface roughening in blow-formed aluminum bottle with crystal plasticity

“…The sheet formability in the clad system AA6xxx/AA3003 by the Fusion technology [23] was investigated recently in [24,25]. 13.…”

Microstructure and mechanical properties of Al–1Mn and Al–10Si alloy circular clad ingot prepared by direct chill casting

“…Fig. 5b-d. A diffusion region or transition region is essential for the clad material composed of two different Al alloys; for example, the transition region from the clad to core occurred across a distance of about 20 mm [21].…”

“…Therefore, this method has drawn great attention in recent years. Several novel approaches of casting have recently been applied to produce clad ingots which include the continuous pouring process for clad (CPC) [16], inversion casting [17], continuous casting process for clad with a level DC magnetic field (LMF) [18,19], and the Novelis FusionTM Process [20,21]. In recent works, we have developed the direct chill continuous casting method to prepare clad ingot.…”