Recent Industrial Application and Perspectives of Rheo-Diecast Process in China

Abstract

The Rheo-diecast process has been rapidly developed and increasingly used in China in the recent 5 years. The high solid fraction (solid content close to 50%) rheo-diecast components were commercially used in the transportation markets mainly because of lightweight. The mechanical properties of the high solid fraction rheo-diecast components are obviously superior than that of the conventional liquid diecast parts. The defects such as oxide, gas entrapment, shrinkage porosities are well prevented in the high solid fraction rheo-diecast parts. The high solid fraction rheo-diecast parts can be fully T6 heat treated. A comparison between high solid fraction rheo-diecast part and conventional liquid diecast part will be described in detail. The low solid fraction (solid content 5-20%) rheo-diecast components were widely used in the 5G communication markets. The future perspectives of Rheo-diecast process will be described at last. 1. Cost reduction. 2. Production consistency. 3. New Rheo-diecast alloys development. 4. Numerical simulation of Rheological filling.

Evolution of Microstructure and Mechanical Properties of the Rheo-Diecast Mg-12Gd-3Y-1Zn-0.4Zr Alloy during Heat Treatment

“…The high solid fraction rheo-diecast parts can be fully T6 heat treated and the mechanical properties of the high solid fraction rheo-diecast parts are excellent. The high solid fraction rheo-diecast parts are normally used in the transportation markets [1]. Several difficult-to-cast Aluminium alloys such as 6061, 7050, 206, 390 and Al matrix composites were successfully fabricated using the SEED technology because of their higher solid fraction content and the distinctive globular structure of the slurry[2-4].…”