Due to the structural damage of the liner die forgings and the loss of structural engineering components to remove any defects of the aluminum alloy of the material, it is a reason for the loss of the structural components of the structure. The invention of Formosa realizes the idea of using a short production die forging and an ultra-long die mandrel, and combines the computer simulation technology to understand the forging process and determine the reasonable parameter extension process. According to the actual production situation, the above method is effective, And the qualified die forgings have been successfully forged, improving the elongation efficiency of die forgings.

The semi-solid billets were prepared by using extruded alloy bars as raw materials. The extrusion state and shape after extrusion, mechanical properties and chemical composition, microstructure and fracture morphology were studied. It showed that the microstructure after heat treatment had changed, and almost strengthened grain boundary phase was formed, and the grain boundary of hard and brittle eutectic phase was improved, thus improving the tensile strength and elongation of the alloy materials.