Please use this identifier to cite or link to this item: https://doi.org/10.4028/www.scientific.net/AMR.545.247
Title: Structural, physical and mechanical properties of Mg-Al alloys processed under CO 2 atmosphere
Authors: Jayalakshmi, S. 
Guan, K.C.
Joshua, K. 
Manoj, G. 
Keywords: Carbon dioxide utilization
Casting
Eco-Processing
Magnesium alloys
Mechanical Properties
Microstructure
Issue Date: 2012
Citation: Jayalakshmi, S., Guan, K.C., Joshua, K., Manoj, G. (2012). Structural, physical and mechanical properties of Mg-Al alloys processed under CO 2 atmosphere. Advanced Materials Research 545 : 247-250. ScholarBank@NUS Repository. https://doi.org/10.4028/www.scientific.net/AMR.545.247
Abstract: Magnesium alloys are the lightest structural materials known that are increasingly replacing steel and aluminium. However, due to its flammable nature, protective atmospheres are employed during Mg-alloy production. In this novel work, Mg-Al alloys with ~3 and ~5 wt.% Al were processed in CO 2 atmosphere, so as to utilize the CO 2 during the melting process. The cast Mg-Al alloys were extruded and studied for their structural, physical and mechanical properties. Results showed improvements in mechanical properties such as hardness, tensile strength and compressive yield strength. The improvement in properties was attributed to the in situ formation of Al 4C 3 arising due to molten metal-carbon interaction. It is noteworthy that the incorporation of CO 2 during processing did not adversely affect the mechanical properties of the alloys. Further, the process is eco-friendly as it not only utilized CO 2, but also eliminates use of harmful cover gases. © (2012) Trans Tech Publications, Switzerland.
Source Title: Advanced Materials Research
URI: http://scholarbank.nus.edu.sg/handle/10635/84742
ISBN: 9783037854495
ISSN: 10226680
DOI: 10.4028/www.scientific.net/AMR.545.247
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