Skip to main content Accessibility help

Effect of Gas Pores on Mechanical Properties of High-Pressure Die-Casting AM50 Magnesium Alloy

  • Wei Jiang (a1), Zhanyi Cao (a1), Liping Liu (a1) (a2) and Bo Jiang (a1)


High-pressure die-casting (HPDC) AM50 tensile specimens were used to investigate characteristics of gas pores and its effect on mechanical properties of HPDC AM50 magnesium alloy. Combining microstructure morphology gained from optical microscopy, scanning electron microscopy (SEM), and three-dimensional (3D) reconstruction with the experimental data from uniaxial tensile testing, we pursued the relationship between gas pores and the mechanical properties of HPDC AM50 Mg alloy. Results indicate that comparing with 3D reconstruction models, 2D images like optical metallography images and SEM images have one-sidedness. Furthermore, the size and maximum areal fraction of gas pores have negative effects on the mechanical properties of HPDC AM50 Mg alloy. With increase of the maximum size of gas pores in the specimen, the ultimate tensile strength (UTS) and elongation decrease. In addition, with the maximum areal fraction becoming larger, both the UTS and elongation decrease linearly.


Corresponding author

* Corresponding author.


Hide All
Balasundaram, A. & Gokhale, A.M. (2001). Quantitative characterization of spatial arrangement of shrinkage and gas (air) pores in cast magnesium alloys. Mater Charact 46, 419426.
Cáceres, C.H. (1995). On the effect of macroporosity on the tensile properties of the Al-7%Si-0.4%Mg casting alloy. Scripta Metall Mater 32, 18511856.
Cáceres, C.H. & Selling, B.I. (1996). Casting defects and the tensile properties of an Al single bond Si single bond Mg alloy. Mater Sci Eng A 220, 109166.
Dahle, A.K., Sannes, S., John, D.H. St. & Westengen, H. (2001). Formation of defect bands in high pressure die cast magnesium alloys. J Light Metals 1, 99103.
Jiang, J.F., Wang, Y., Li, Y.F., Shan, W.W. & Luo, S.J. (2012). Microstructure and mechanical properties of the motorcycle cylinder body of AM60B magnesium alloy formed by combining die casting and forging. Mater Des 37, 202210.
Jiang, W., Cao, Z.Y., Sun, X. & Liu, H.F. (2015). Three-dimensional microstructure reconstruction and finite element simulation of gas pores in the high-pressure die-casting AZ91 Mg alloy. Microsc Microanal 21, 14201425.
Laukli, H.I., Gourlay, C.M. & Dahle, A.K. (2005). Migration of crystals during the filling of semi-solid castings. Metall Mater Trans A 36A, 805818.
Lee, S.G., Gokhale, A.M. & Sreeranganathan, A. (2006 a). Reconstruction and visualization of complex 3D pore morphologies in a high-pressure die-cast magnesium alloy. Mater Sci Eng A 427, 9298.
Lee, S.G., Gokhale, A.M., Patel, G.R. & Evans, M. (2006 b). Effect of process parameters on porosity distributions in high-pressure die-cast AM50 Mg-alloy. Mater Sci Eng A 427, 99111.
Lee, S.G. & Gokhale, A.M. (2006). Formation of gas induced shrinkage porosity in Mg-alloy high-pressure die-castings. Scripta Metall Mater 55, 387390.
Lee, S.G., Patel, G.R., Gokhale, A.M., Sreeranganthan, A. & Horstemeyer, M.F. (2005). Variability in the tensile ductility of high-pressure die-cast AM50 Mg-alloy. Scripta Metall Mater 53, 851856.
Sun, X., Choi, K.S. & Li, D.S. (2013). Predicting the influence of pore characteristics on ductility of thin-walled high pressure die casting magnesium. Mater Sci Eng A 572, 4555.
Wang, R.M., Eliezer, A. & Gutman, E.M. (2003). An investigation on the microstructure of an AM50 magnesium alloy. Mater Sci Eng A 355, 201207.
Weiler, J.P. & Wood, J.T. (2009). Modeling fracture properties in a die-cast AM60B magnesium alloy I—Analytical failure model. Mater Sci Eng A 527, 2531.
Weiler, J.P., Wood, J.T., Klassen, R.J., Maire, E., Berkmortel, R. & Wang, G. (2005). Relationship between internal porosity and fracture strength of die-cast magnesium AM60B alloy. Mater Sci Eng A 395, 315322.
Wu, M.W. & Xiong, S.M. (2011). Microstructure characteristics of the eutectics of die cast AM60B magnesium alloy. J Mater Sci Technol 27(12), 11501156.


Effect of Gas Pores on Mechanical Properties of High-Pressure Die-Casting AM50 Magnesium Alloy

  • Wei Jiang (a1), Zhanyi Cao (a1), Liping Liu (a1) (a2) and Bo Jiang (a1)


Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed.