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Title

INVESTIGATING THE FFORMATION OF INTERMETALLIC COMPOUNDS AND THE VARIATION OF BOND STRENGTH BETWEEN AL-CU LAYERS AFTER ANNEALING IN PRESENCE OF NICKEL BETWEEN LAYERS

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 Start Page 35 | End Page 43

Abstract

 In the present study, the effect of post-rolling annealing heat treatment on the formation of INTERMETALLIC COMPOUNDS between Al-Cu strips, in the presence of nickel coating on the Cu strips, was investigated. In addition, the effect of post-rolling annealing and INTERMETALLIC COMPOUNDS on the BOND STRENGTH of Al-Cu strips was evaluated. In order to prepare samples, Cu strips were coated with nickel by electroplating process. After surface preparing, Cu strips were placed between two Al strips and roll bonded. This method is used for producing Al-Ni-Cu composites. Then the samples were annealed at 773K for 2 h. The formation of INTERMETALLIC COMPOUNDS was studied using energy dispersive spectroscopy (EDS) and X-ray diffraction (XRD). Also, in order to investigate BOND STRENGTH of Al-Cu after post-rolling annealing heat treatment, samples were produced using nickel powder and nickel coating. Then BOND STRENGTH of strips was investigated using peeling test. The results revealed that by post-rolling annealing of layers, the BOND STRENGTH between Al-Cu strips decreases dramatically.

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