Microstructure Simulation of Die Casting Magnesium Alloy

Zhen Nan Fu; Shou Mei Xiong

doi:10.4028/www.scientific.net/MSF.575-578.135

Paper Titles

A Cellular Automata Model for Dendrite Structure Simulation
p.109

Numerical Simulation on the Dendritic Spacing and Microporosity in A356 Alloy Ingot
p.115

Coupled Numerical Simulation on Heat, Flow and Solution Transport in Double-Stream-Pouring Continuous Casting
p.121

A New Prediction Way to Shrinkage Cavity Formation for Ductile Iron Castings
p.127

Microstructure Simulation of Die Casting Magnesium Alloy
p.135

The Simulation of Thermal Field in Induction Melting with Cold-Crucible and Dual Frequencies
p.141

Control of Liquid Level in Tundish of Strip Caster with Automatic Pouring System
p.147

Numerical Simulation of Solidified Structure Formation of Al-Si Alloy Casting Using Cellular Automaton Method
p.154

Material Constants of Ferritic Spheroidal Cast Iron during Hot Deformation
p.164

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Microstructure Simulation of Die Casting Magnesium Alloy

Abstract:

A cellular automaton (CA) based model for two-dimensional simulation of the grain morphology of high pressure die casting magnesium alloy was developed. The heterogeneous nucleation, the solute redistribution both in liquid and solid, the interface curvature and the growth anisotropy during solidification were also considered in the model. By fitting the curve of grain density distribution, parameters of continuous nucleation equation based on Gaussian distribution were calculated. The microstructure simulation of step-shape die castings of AM50 magnesium alloy was studied. The metallographic microstructure of the castings at the surface and center of three steps with different initial die temperature was investigated. The simulation results were compared with the experimental results and they were in good agreement on average grain size.