| Summary: | The effects of different process parameters on the segregation behavior and properties of bottom twin-roll casting 2624 aluminum alloy were studied in detail by simulating the flow field in the cast-rolling zone and using SEM, EPMA, DSC, electrical conductivity and tensile properties at room temperature. The mechanism of segregation in the cast-rolling process was analyzed.The results show that the large size banded segregation appears at the edge of bottom twin-roll casting 2624 aluminum alloy, solute elements exhibit macroscopic inverse segregation.The decrease of pouring temperature and casting speed can enhance the peak velocity of vortex and reduce the degree of macrosegregation。The increase of cooling rate can weaken the degree of microsegregation and reduce the conductivity.In addition, the yield strength, tensile strength and elongation of the cast-rolled sheet increase with the decrease of pouring temperature and casting speed, and the mechanical properties of the alloy are improved.
|
|---|