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Evolution of microstructure in centrifugal cast Al-Cu alloy

         

摘要

In this research,the effects of centrifugal radius and mould rotation speed on microstructure in centrifugal-cast Al-Cu alloy have been investigated.The results show that,with increase of the centrifugal radius or mould rotation speed,the grain size of centrifugal-cast Al-Cu alloy decreases gradually,while the content of white phases containing the Al2Cu precipitated from α-phase,divorced eutectic and regular eutectic microstructure increases,leading to higher Cu macrosegregation.The variation level of microstructure in centrifugal-cast Al-Cu alloy at 600 rpm of mould rotation speed is greater than that at 300 rpm.

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