Experimental Investigation on Earing Behavior of Aluminum/Copper Bimetal Sheet

Abstract

The effect of post-annealing treatment on the texture evolution of an Al/Cu bimetal sheet as well as on the earing behavior was investigated. The earing behavior was tracked by means of measuring plastic anisotropy and deep drawing. The analysis texture evolution for asrolled and annealed samples was performed by X-ray diffraction. The study results show that Ár= " r r value increases and becomes positive when annealing temperature rises up to 300 C, in the meanwhile, a transition was observed from 45 to 0/90 earings. The mismatch in texture evolution between Al-side and Cu-side specimens was investigated. The typical recrystallization texture of Cu-side specimens mainly consists of a cube-orientation with its twins (CT) and cube texture develops at anneal temperature higher than 200 C. However, cube texture becomes the main component in Al-side specimen annealed at the temperature higher than 300 C. The mismatch in texture evolution between aluminum and copper has profound effect on the earing behavior of Al/Cu bimetal sheet. The analysis results of texture and plastic anisotropy were inductively reasoned to construct a prediction model of a Al/Cu bimetal material on earing. The earing behavior of Al/Cu bimetal material is depicted as a compromised result of the growth and decline in some certain texture components, which is agreement with the experimental findings obtained in this study.

Numerical study on the effect of anisotropy on deformation behavior of aluminum bilayer sheets in single point incremental metal forming

“…Less attention has been devoted to the behavior of plastic anisotropy caused by the textures and mechanical properties of bimetal sheets in the forming processes. The texture evolution of Al/Cu sheet and the effect of plastic anisotropy on earing behavior in a deep drawing process were investigated in [8]. Researchers concluded that the mismatch between sheets of Cu and Al, particularly regarding plastic anisotropy, had a good impact on the properties of the resulting bimetal Al/Cu sheet.…”

Experimental and simulated comparison of finite element models of bimetallic sheets for deep drawing process

“…They also stated that the wrinkling state during deep drawing is controlled by the harder stainless steel. Chen et al [2] investigated the earing behavior of Al / Cu bimetallic sheet during cylindrical deep drawing. They bonded aluminum and copper sheets by cold rolling.…”

Experimental study on bending behaviour of aluminium-copper clad sheets in V-bending process

“…Aluminium-Copper clad sheets are widely used as electric elements such as power connectors, tapes, battery casings, condenser casings and as heat conductive elements in heat exchangers because of its higher magnetic shielding, heat conductivity, corrosion resistance, lighter weight and lower price than pure copper or copper alloys [15,16]. The research on the study of bending behaviour of Al-Cu bimetallic sheet has not been extensively studied yet.…”