Predicting the Influence of Microporosity on the Mechanical Properties and Fracture Behavior of High-Pressure Die-Cast AM50 Magnesium Alloy

X. Sun; Z.Y. Cao; H.F. Liu; W. Jiang; L.P. Liu

doi:10.4028/www.scientific.net/AMM.670-671.90

Paper Titles

Study on the Corrosion Electrochemical Behaviors of Three Kinds of Metal in Eutrophic Fresh Water
p.70

The Effect of Water Vapor on Thermal Oxide Grown on Inconel 690
p.74

Investigation of Material Behavior of TRIP Steel by Macro and Micro Multiscale Simulation
p.82

Critical Cooling Rate of Y₃₆Nd₂₀Al₂₄Co₂₀ Bulk Amorphous Alloy
p.86

Predicting the Influence of Microporosity on the Mechanical Properties and Fracture Behavior of High-Pressure Die-Cast AM50 Magnesium Alloy
p.90

Research on Hardness for Low-Alloy Steel after Fire Damage
p.95

Study on Band Gap Varying of Diamond Photonic Crystals by Fabricating to Bring the Error of Dielectric Volume Fraction
p.101

Wide Absolute-Photonic-Bandgap 2D Square-Lattice Photonic Crystal Based on Hollow Cylinders and Cross Connecting Plates
p.105

A Two-Dimensional Square-Lattice Photonic Crystal with Rotated Square Cylinders and Cross Thin Plates Exhibiting Wide Photonic Bandgap
p.109

HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 670-671Predicting the Influence of Microporosity on the...

Predicting the Influence of Microporosity on the Mechanical Properties and Fracture Behavior of High-Pressure Die-Cast AM50 Magnesium Alloy

Abstract:

In this paper, experimental and finite element modeling methods were adopted to investigate the effects of microporosity on the tensile properties and fracture behavior of high-pressure die-casting (HPDC) AM50 alloy. By specimen-to-specimen fractographic analysis, the variability in tensile properties could be quantitatively correlated with the areal fraction of the porosity presented in the corresponding fracture surfaces by using a simple power law equation. Numerical models of synthetic microstructures with different pore sizes, areal fractions of pores and pore distributions were established. Based on the experimental and numerical simulation results, it could be concluded that the fracture will initially occur in the region where has the highest intensity of equivalent stress field (i.e., contains the most highly localized cluster of pores and shrinkage), and then, fracture crack will fast propagate through the adjacent regions which have the relatively high intensity of stress field.

You might also be interested in these eBooks

Applied Mechanics, Materials and Manufacturing IV

View Preview

Info:

Periodical:

Applied Mechanics and Materials (Volumes 670-671)

Pages:

90-94

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.670-671.90

Citation:

Cite this paper

Online since:

October 2014

Authors:

X. Sun, Z.Y. Cao*, H.F. Liu, W. Jiang, L.P. Liu

Keywords:

Finite Element Analysis (FEA), Fracture Propagation, High-Pressure Die-Casting (HPDC), Magnesium Alloys, Microporosity

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

* - Corresponding Author

References

[1] M. K. Surappa, E. Blank, J. C. Jaquet, Effect of macro-porosity on the strength and ductility of cast Al-7Si-0. 3Mg alloy, Scripta Metall. 20 (1986) 1281-1286.

DOI: 10.1016/0036-9748(86)90049-9

Google Scholar

[2] A. M. Gokhale, G. R. Patel, Analysis of variability in tensile ductility of a semi-solid metal cast A356 Al-alloy, Mat. Sci. Eng. A. 392 (2005) 184-190.

DOI: 10.1016/j.msea.2004.09.051

Google Scholar

[3] R. M. Wang, A. Eliezer, E. M. Gutman, An investigation on the microstructure of an AM50 magnesium alloy, Mat. Sci. Eng. A. 355 (2003) 201-207.

DOI: 10.1016/s0921-5093(03)00065-0

Google Scholar

[4] V. Y. Gertsman, J. Li, S. Xu, J. P. Thomson, M. Sahoo, Microstructure and second-phase particles in low-and high-pressure die-cast magnesium alloy AM50, Metall Mater Trans A. 364 (2005) 1989-(1997).

DOI: 10.1007/s11661-005-0319-5

Google Scholar

[5] W. Altenhof, A. Raczy, M. Laframboise, J. Loscher, A. Alpas, Numerical simulation of AM50A magnesium alloy under large deformation, Int J Impact Eng. 30 (2004) 117-142.

DOI: 10.1016/s0734-743x(03)00060-5

Google Scholar

[6] J. Campbell, Entrainment defects, Mater Sci Tech. 22 (2006) 127-145.

Google Scholar

[7] S. G. Lee, G. R. Patel, A. M. Gokhale, A. Sreeranganathan, M. F. Horstemeyer, Variability in the tensile ductility of high-pressure die-cast AM50 Mg-alloy, Scripta Materialia. 53 (2005) 851-856.

DOI: 10.1016/j.scriptamat.2005.06.002

Google Scholar