By using self-made wavelike sloping plate setup

preparing semisolid billets of AlSi6Mg2 alloy and thixoforming were studied. It is shown that the semisolid billets with good microstructures can be prepared by the proposed process

and the billets were composed of fine spherical grains and a little part of rosette grains

and the microstructure of re-melted semisolid billet is perfect. When the remelting temperature is 597 ℃

holding time is 90min

mould preheating temperature is 600 ℃ and the holding time is 120min

thixoforming product with fine surface and good microstructures can be manufactured. During the die casting

liquid flow is the mainly deformation pattern

due to the liquid aggregation in the upper part of the product

the corresponding hardness is lower

however

there is a small solid plastic deformation in the bottom of the product

the corresponding hardness is higher. After T5 heat treatment

the hardness at the bottom of the product is obviously improved and can reach 100.