Development of Rheo-Diecasting of Al-Si Alloys Based on a Modified DSCP Process

Zhi Feng Zhang; Jun Xu; Yue Long Bai; Li Kai Shi

doi:10.4028/www.scientific.net/SSP.141-143.185

Paper Titles

Microstructure Evolution and Mechanical Properties of Rheoformed YL112 Aluminum Alloy
p.163

The Influence of Heat Treatments for Laser Welded Semi Solid Metal Cast A356 Alloy on the Fracture Mode of Tensile Specimens
p.169

Compocasting of an Al-Si-SiC_p Composite Using Powder Injection Method
p.175

Development of In-Mold Rheocasting Process
p.181

Development of Rheo-Diecasting of Al-Si Alloys Based on a Modified DSCP Process
p.185

Development of Novel Hot Chamber Rheo-Diecasting Process
p.191

Twin Roll Casting and Melt Conditioned Twin-Roll Casting of Magnesium
p.195

Thixoforming of Hypereutectic Al/Si Automotive Pistons
p.201

Robustness of a Thixoforming Production Line
p.207

HomeSolid State PhenomenaSolid State Phenomena Vols. 141-143Development of Rheo-Diecasting of Al-Si Alloys...

Development of Rheo-Diecasting of Al-Si Alloys Based on a Modified DSCP Process

Abstract:

An advanced rheo-diecasting technique, based on a modified multi-electromagnetic stirring continuous preparation (MSCP) process was developed for manufacturing near-net shape Al-alloys components with high integrity. The modified MSCP process innovatively combines noncontact electromagnetic stirring and an annular chamber with specially designed profiles to in situ make high quality semisolid slurry, and intensive forced shearing and self-wiping action can be achieved under high shear rate and high intensity of turbulence inside the annular chamber. Three Al-Si alloys with hypoeutectic, eutectic and hypereutectic compositions were tested in this study. The results indicate that, compared with those produced by conventional high-pressure diecasting (HPDC) process, rheo-diecasting samples based on the modified MSCP process have finer and more uniform microstructure.