The result showed that, by adopting proper pouring temperature, chilling the molten metal before mould filling, and properly vibrating the supercooled molten metal, it is possible to obtain spheroidal or quasi-spheroidal non-dendrite structure of proeutectic austenite; and, under the condition of low temperature pouring with a slope plate cooler, the molten metal washing, flowing and.

Semi-solid isothermal treatment is thought as a potential technology in the manufacturing nondendritic structure alloy slurry,the research of this technology is helpful to enrich the theory of semi-solid metal forming and to accelerate the application of this technology.

The effect of various parameters, for example, stirring intensity, locality and cooling rate etc, on the non-dendritic structure form of Al-6.

This paper introduced the key technology of SSP(semi-soild process) thixomolding of magnesium alloys : the preparation of non-dendritic structure,reheating,thixomolding.

Semi-solid isothermal treatment is thought as a potential technology in the manufacturing non-dendritic structure alloy slurry, the research of this technology is helpful to rich the theory of semi-solid metal forming and accelerate the application of this technology.

The non dendritic structure for thixo forming could be obtained when ZA27 alloy modified by these elements was heat treatd at semi solid temperature.

In this paper, the formation mechanism for non dendritic structure in semi solid metal is proposed, namely mechanism of particle drift and blending compressing.