Thermal simulation compressive experiment was conducted for semi-solid 6063 aluminum alloy billets which was prepared by near-liquidus semi-continuous casting. Based on stress-strain curves at varied temperatures and strain rates

inverse-squeezing process of the semi-solid 6063 aluminum alloy was simulated by the Deform-3D software at 615

6

25 ℃ with strain rate of 0.1

5

s-1 and 60% deformation rate to understand effects of deformation rate

deformation temperature

punch velocity and frictional coefficient and to optimize the processing parameters. The results reveal that with increasing in deformation rates

flow velocity and flow orientation of the alloy in severe deformation zone are distinctly changed

meanwhile

light deformation zone is gradually evolved

which results in the remarkable non-uniformity of deformation. With raising in punch velocity

flow velocity of the billets is accelerated

which is harmful for the formation as a result of aggravating non-uniformity of the whole deformation process. With deformation temperature increase

equivalent strain of the billets in severe deformation zone is obviously increased

while equivalent stress in the billets is decreased. Effects of frictional states on the deformation of billets can be neglected.