A Constitutive Model for Casting Magnesium Alloy Based on the Analysis of a Spherical Void Model

Bin Chen; X. Peng; Xiang Guo Zeng; X. Wu; S. Chen

doi:10.4028/www.scientific.net/MSF.546-549.221

Paper Titles

Microstructure and Precipitates in Mg-Zn-Y Alloys
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Study on Electromagnetic Vibration Casting (EVC) of Magnesium Alloys
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Influence of RE on Microstructure and Mechanical Properties of Mg-Li-Al Alloys
p.211

Effects of Non-Flux Purification on the Microstructure and Mechanical Properties of AZ31+xCa Mg Alloy
p.217

A Constitutive Model for Casting Magnesium Alloy Based on the Analysis of a Spherical Void Model
p.221

Microstructures and Mechanical Properties of Mg-Li-Zn Alloys as Processed by ECAE
p.225

Microstructural Characterization and Mechanical Behavior of an Mg-9%Li-1%Zn Alloy
p.229

Effect of Grain Size on Necklace Formation of Magnesium Alloys
p.233

Elevated Temperature Mechanical Behavior of Mg-Y-Zn Alloys
p.237

HomeMaterials Science ForumMaterials Science Forum Vols. 546-549A Constitutive Model for Casting Magnesium Alloy...

A Constitutive Model for Casting Magnesium Alloy Based on the Analysis of a Spherical Void Model

Abstract:

Casting magnesium alloys are heterogeneous materials containing numerous voids. Assuming the voids are spherical, in the present investigation, the evolution equations of the growth and nucleation of the voids have been presented. Combining the evolution equation of the void growth with that of the void nucleation, the evolution rule of the voids was obtained. Based on the void evolution rule a nonclassical elastoplastic constitutive model involving void evolution was developed. The corresponding numerical algorithm and finite element procedure were developed and applied to the analyses of the elastoplastic response and the porosity of casting magnesium alloy. The calculated results show the satisfactory agreement with experiments.