硅线石颗粒与铝液混融后挤压下流动凝固的塑性变形特征

MECHANICAL CHARACTERISTIC OF FLOWINGSOLIDIFICATION UNDER THE EXTRUSION FOR THE MIXTUREOF LIQUID ALUMINUM WITH SILLIMANITE PARTICLES

本文以液态模锻和液态挤压研究为基础，提出了一种新型的颗粒增强金属基复合材料的制造方法，并采用实验观察和理论分析手段，对搅融混合后的半固态浆料的挤压过程进行研究，揭示了复合体在流动中凝固、凝固中塑性变形的力学特征，为正确选择工艺参数和过程的稳定奠定基础。

According to the theory of liquid metal forging and liquid metal extrusion,a new kind of fabricating method for particles reinforced metal matrix composite was put forward by author. In this paper,the extrusion process to semisolid thick liquid after the mixture was studied by means of the theoretical analysis and experimental methods.Mechanical characteristics of solidification during flowing and plastic deformation during solidification for composite was found.So the base was built up for selecting technology parameter and for building a stabile process.