Abstract
Magnesium alloys with their weight saving advantage exhibit unique application potential in the automotive and aerospace industries. Recent years have seen significant progress in the development of rare earth containing Mg alloys, as rare earth addition is considered a promising route to enhance the mechanical characteristics of Mg. In the present study, a new Mg alloy containing 5.16 at. % aluminum and trace (0.05 at. %) erbium was synthesized using the disintegrated melt deposition technique followed by hot extrusion. The microstructural and mechanical properties of the developed Mg-Al-Er alloy were evaluated in comparison to that of pure Mg. Microstructural investigation revealed significant grain refinement and the presence of Mg17Al12 intermetallic phases. Evaluation of mechanical properties under indentation loads showed significant improvement in microhardness by +50%. Under tensile loads, the developed Mg-Al-Er alloy exhibited +86%, +115% and +95% enhancement in yield strength, ultimate strength and ductility respectively. Similarly, an enhancement in yield strength by +115%, ultimate strength by +37% and ductility by +25% were observed under compressive loads. The overall effects of Al and Er addition on the mechanical properties of the Mg are discussed using structure-property relationship.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
Similar content being viewed by others
References
Luo, A. A., Magnesium: current and potential automotive applications. Jom 2002, 54, (2), 42–48.
Avedesian, M. M.; Baker, H., ASM specialty handbook: magnesium and magnesium alloys. ASM international 1999, 274.
Bohlen, J.; Yi, S.; Letzig, D.; Kainer, K. U., Effect of rare earth elements on the microstructure and texture development in magnesium–manganese alloys during extrusion. Materials Science and Engineering: A 2010, 527, (26), 7092–7098.
Bettles, C.; Gibson, M.; Zhu, S.-M., Microstructure and mechanical behaviour of an elevated temperature Mg-rare earth based alloy. Materials Science and Engineering: A 2009, 505, (1), 6–12.
Zhu, S.-M.; Gibson, M.; Easton, M.; Nie, J., The relationship between microstructure and creep resistance in die-cast magnesium–rare earth alloys. Scripta Materialia 2010, 63, (7), 698–703.
Rokhlin, L., Structure and properties of alloys of the Mg-REM system. Metal science and heat treatment 2006, 48, (11–12), 487–490.
Chia, T. L.; Easton, M.; Zhu, S.-M.; Gibson, M.; Birbilis, N.; Nie, J., The effect of alloy composition on the microstructure and tensile properties of binary Mg-rare earth alloys. Intermetallics 2009, 17, (7), 481–490.
Gupta, M.; Sharon, N. M. L., Magnesium, magnesium alloys, and magnesium composites. Wiley. com: 2011.
Nguyen, Q.; Fan, Y.; Tun, K.; Chan, J.; Kwok, R.; Kuma, J.; Gupta, M., An investigation into the capability of unconventional amount of aluminum and nano-alumina to alter the mechanical response of magnesium. Journal of Materials Science 2012, 47, (1), 234–240.
Kiełbus, A.; Rzychón, T.; Cibis, R., Microstructure of AM50 die casting magnesium alloy. Journal of Achievements in Materials and Manufacturing Engineering 2006, 18, (1–2).
Callister, W. D.; Rethwisch, D. G., Materials science and engineering: an introduction. 2007.
Dieter, G. E., Mechanical metallurgy. McGraw-Hill New York: 1976; Vol. 3.
Koike, J.; Kobayashi, T.; Mukai, T.; Watanabe, H.; Suzuki, M.; Maruyama, K.; Higashi, K., The activity of non-basal slip systems and dynamic recovery at room temperature in fine-grained AZ31B magnesium alloys. Acta Materialia 2003, 51, (7), 2055–2065.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2015 TMS (The Minerals, Metals & Materials Society)
About this chapter
Cite this chapter
Sankaranarayanan, S., Ng, B.M., Jayalakshmi, S., Kumar, M.G., Nguyen, Q.B., Gupta, M. (2015). Microstructure and Mechanical Properties of a Magnesium-Aluminium-Erbium Alloy. In: Manuel, M.V., Singh, A., Alderman, M., Neelameggham, N.R. (eds) Magnesium Technology 2015. Springer, Cham. https://doi.org/10.1007/978-3-319-48185-2_82
Download citation
DOI: https://doi.org/10.1007/978-3-319-48185-2_82
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-48611-6
Online ISBN: 978-3-319-48185-2
eBook Packages: Chemistry and Materials ScienceChemistry and Material Science (R0)