Microstructure Evolution and Mechanical Properties of Rheoformed YL112 Aluminum Alloy

Xiang Jie Yang; Hong Min Guo

doi:10.4028/www.scientific.net/SSP.141-143.163

Paper Titles

The Microstructure Evolvement and Simulation Analysis during Semi-Solid Processing of Aluminum Alloy
p.139

Semi-Solid Casting of High-Reactive Wrought Alloys by Means of the Alloy AlLi2.1Mg5.5ScZr (AA1420*)
p.145

Rheocasting of Al-Cu Alloy A201 with Different Silver Contents
p.151

Study on Microstructure-Processing Relationship of a Semisolid Rheocasting A357 Aluminum Alloy
p.157

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

HomeSolid State PhenomenaSolid State Phenomena Vols. 141-143Microstructure Evolution and Mechanical Properties...

Microstructure Evolution and Mechanical Properties of Rheoformed YL112 Aluminum Alloy

Abstract:

Rheo-die casting (RDC) based on LSPSF (low superheat pouring with a shear field) rheocasting process has been exploited. In case of secondary die casting aluminum alloy YL112, LSPSF allowed for preparation of sound semi-solid slurry in 15-20s that fully meet the production rate of HPDC, the primary α-Al exhibiting a mean equivalent diameter of 70 μm and shape factor of 0.93, without any entrapped eutectic. Compared to conventional HPDC, RDC improves microstructures in castings. Secondary solidification of semi-solid slurry takes place uniformly throughout the entire cavity, producing an extremely fine and uniform microstructure. The experimental results show the RDC 380 alloy has much improved integrity and mechanical properties, particularly elongation, and heat treatment can be used to enhance the mechanical properties.