UNIFORMIZATION PROCESS OF TiC_P IN TiC_P/Zn-Al COMPOSITE PREFABRICATED BY XD PROCESS

The TiC/Al alloy with high TiC particles content was prepared by XD^TM process. The uniformization process of TiC particles in the stable zinc melt was studied and analyzed using self-made experimental equipment, and a model of the uniformization process was built. The results show that zinc diffuses into TiC/Al alloy placed in the zinc melt at temperatures below the melting point of aluminum, forming a zinc diffusing layer on the surface of the prepared TiC/Al alloy. With the increase of the concentration of zinc in the alloy, the liquidus temperature decreases, and when the temperature is equal to or below the temperature of zinc melt, the surface of the prepared TiC/Al alloy will melt and TiC particles will drop from it, then transfer into the zinc melt, and finally distribute uniformly in the zinc melt.