Hostname: page-component-cd9895bd7-8ctnn Total loading time: 0 Render date: 2024-12-28T04:10:44.505Z Has data issue: false hasContentIssue false
  • English
  • Français

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

Published online by Cambridge University Press:  30 June 2016

Wei Jiang ,
Zhanyi Cao ,
Liping Liu  and
Bo Jiang
Wei Jiang
Affiliation:
Key Laboratory of Automobile Materials, Ministry of Education and Department of Materials Science and Engineering, Jilin University, Changchun, Jilin 130025, China
Zhanyi Cao*
Affiliation:
Key Laboratory of Automobile Materials, Ministry of Education and Department of Materials Science and Engineering, Jilin University, Changchun, Jilin 130025, China
Liping Liu
Affiliation:
Key Laboratory of Automobile Materials, Ministry of Education and Department of Materials Science and Engineering, Jilin University, Changchun, Jilin 130025, China Department of Engineering and Technology, Changchun Vocational Institute of Technology, Changchun, Jilin 130033, China
Bo Jiang
Affiliation:
Key Laboratory of Automobile Materials, Ministry of Education and Department of Materials Science and Engineering, Jilin University, Changchun, Jilin 130025, China
*
*Corresponding author.caozy@jlu.edu.cn
Get access

Abstract

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.

Keywords

three-dimensional reconstructionfinite element simulationmagnesium alloymechanical properties
Type
Materials Applications
Information
Microscopy and Microanalysis , Volume 22 , Issue 4 , August 2016 , pp. 814 - 819
Copyright
© Microscopy Society of America 2016 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Balasundaram, A. & Gokhale, A.M. (2001). Quantitative characterization of spatial arrangement of shrinkage and gas (air) pores in cast magnesium alloys. Mater Charact 46, 419–426.CrossRefGoogle Scholar
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, 1851–1856.Google Scholar
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, 109–166.Google Scholar
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, 99–103.Google Scholar
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, 202–210.Google Scholar
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, 1420–1425.Google Scholar
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, 805–818.CrossRefGoogle Scholar
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, 92–98.Google Scholar
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, 99–111.Google Scholar
Lee, S.G. & Gokhale, A.M. (2006). Formation of gas induced shrinkage porosity in Mg-alloy high-pressure die-castings. Scripta Metall Mater 55, 387–390.CrossRefGoogle Scholar
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, 851–856.Google Scholar
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, 45–55.Google Scholar
Wang, R.M., Eliezer, A. & Gutman, E.M. (2003). An investigation on the microstructure of an AM50 magnesium alloy. Mater Sci Eng A 355, 201–207.Google Scholar
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, 25–31.Google Scholar
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, 315–322.Google Scholar
Wu, M.W. & Xiong, S.M. (2011). Microstructure characteristics of the eutectics of die cast AM60B magnesium alloy. J Mater Sci Technol 27(12), 1150–1156.Google Scholar