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针对液态搅拌法制备ＳｉＣｐ／ＺＡ２７复合材料，研制出高效复合熔剂，用它处理ＳｉＣ颗粒表面，以改变颗粒表面物理结构和化学特性，引起反应润湿，造成熔体的成分起伏并优化结晶条件，从而一气完成改善润湿、变质精炼和活性吸附金相分析表明：宏观上制得的复合材料组织致密、颗粒分布均匀且界面结合良好；微观上颗粒处于晶内，呈现颗粒吞没机制就凝固特性，复合材料宏观上仍以糊状方式凝固，但在颗粒微区内，凝固方式从颗粒表层至熔体中心由中间凝固，甚至逐层凝固，向糊状凝固方式过渡通过比较试验，分析并获得了最优熔剂处理工艺和最优液态搅拌工艺经凝固过程固液界面行为分析证实，控制合适的熔剂层厚度和配比能够实现颗粒吞没机制，使颗粒处于晶内，此时颗粒分布均匀、组织致密、界面结合强，制得的复合材料的常温抗拉强度约为３１０～３６０ＭＰａ，延伸率约处于０．５％～１．５％
In this paper, SiCp / ZA27 composite was prepared by liquid-mixing method and a high-efficiency composite flux was developed. The surface of SiC particles was treated with it to change the physical structure and chemical properties of the particles and cause reaction wetting, resulting in composition fluctuation and optimization of crystallization conditions. So as to improve the wetting, metamorphic refining and active adsorption metallographic analysis showed that: macroscopically prepared composite material is compact, uniform particle distribution and good interfacial bonding; microscopic particles in the crystal, showing the mechanism of particle swallow ‰ coagulation However, in the microscopic region, the solidification mode is solidified from the particle surface to the melt center by solidification in the middle and even solidified by layer, and the transition to the pasty solidification mode is made. Through comparative experiments, analysis And obtained the optimal flux treatment process and the optimal liquid mixing process solidified by the solidification process interface confirmed that the behavior of the appropriate flux layer thickness and ratio can be achieved by the mechanism of particle swallow, so that the particles in the crystal, the particle distribution Uniform, dense tissue, the interface with strong combination of the system Room temperature tensile strength of the material is approximately 310 ~ 360MPa, elongation is about 0.5% ~ 1.5%