论文部分内容阅读
在合金凝固过程中加以搅拌或通过其它处理，可得到非枝晶结构合金，其凝固组织为球状的等轴晶，这种合金在固相含量６０％以下时流动性好，变形抗力很小。半固态金属成形是将具有上述特殊组织的、固液相共存的半固态坯料加工成所需形状、性能制品的技术，包括半固态锻造、半固态挤压、半固态轧制、半固态压铸等类型。它是７０年代出现的新兴技术，优点显著，前景良好，有望成为２１世纪金属制造关键技术之一。
In the solidification process of the alloy to be stirred or through other treatment can be non-dendritic structure of the alloy, the solidified structure of spherical equiaxed grain, the alloy in the solid content of 60% below the flow of good resistance to deformation is small. Semi-solid metal forming is a technique for processing a semi-solid billet having the above-mentioned special structure in the solid-liquid phase into a desired shape and performance product, including semisolid forging, semi-solid extrusion, semi-solid state rolling and semi-solid die casting Types of. It is emerging technology emerged in the 70s, with significant advantages and good prospects, is expected to become one of the key technologies of metal manufacturing in the 21st century.