Bubbling and peeling in hot rolled Cu-0.1Fe-0.03P sheet and slag in cold rolled thin sheet were investigated by scanning electron microscope（SEM）

EDS

XRD and TEM.The results reveal that deoxidation of P in Cu-Fe-P alloy can enhance the hydrogen absorption effects in copper melt

resulting in the dispersive distribution of hydrogen in alloy and aggregating growth of formed gas hole in hot rolling process

which are responsible for the origination of bubble.Meanwhile

the hydrogen in the copper melt can improve the oxygen absorption tendency

resulting in the formation of Cu2O.The low plasticity of Cu2O phase in bubbling and low bonding with matrix result in the peeling and slag of cold rolled sheet as a result of fragmentation or little deformation in subsequent cold rolling process.