Abstract
A model based on inter-diffusion theory was established to predict growth kinetics of the intermetallic compounds (IMCs) formed in roll bonded Al/Cu sheets during annealing process. The model can give good prediction of both IMC layers growth kinetics and element concentration distribution at the interface of roll bonded Cu/Al sheets with different thickness under different annealing conditions with certain roll reduction range. It is revealed that the calculated results of the proposed model are depended on the inter-diffusion coefficient of each components, which could be related to the interface bonding state, i.e., bonding methods or rolling reductions for roll bonding. And there was big difference in inter-diffusion coefficient of Al and Cu matrix under different bonding state, while the inter-diffusion coefficient of IMCs changed slightly.
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