| 摘要 |
<p>A method for forming a semisolid slurry from a metallic alloy having at least two immiscible components, comprising the steps of a) providing the alloy at a temperature of at least about its demixing temperature, b) cooling the alloy to a temperature at which said components become immiscible, c) applying shear to the alloy in order to convert the alloy into a liquid suspension in which the minor component is dispersed in the major component in a liquid phase, and d) cooling the liquid suspension to its monotectic temperature or below and continuing to apply shear in order to form a semisolid slurry. Castings are formed from the semisolid slurry by transferring the slurry to a mould or to a pre-heated metal band.</p> |
