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Ignition and Mechanical Properties of Hot Extruded Magnesium Alloys with Trace Yttrium Additions

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Abstract

The ignition risk of magnesium restricts its usage in many transport applications. Yttrium has proven to be a potent alloying element to increase the ignition properties of magnesium, although large alloying quantities are generally utilized. The present work analyzes the effect of trace yttrium additions on the ignition, flammability and mechanical properties of wrought pure Mg and AZ31. A range of alloys were cast with increasing quantities of yttrium ranging from 0 wt.% to 0.2 wt.%. It was found that a concentration of 0.1 wt.% Y and above in Mg–Y binary alloys was able to increase the ignition temperature and flammability resistance. The observed increase was due to the formation of complex (MgO + Y2O3) oxide structures. However, yttrium additions lowered the ignition temperature when alloyed with AZ31. Additionally, yttrium additions were found to improve the mechanical properties when alloyed with pure Mg, although the impact on the AZ31 alloy was negligible.

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Author notes

  1. Steven Babaniaris and Rameshkumar Varma have contributed equally to this work.

Authors and Affiliations

  1. Institute for Frontier Materials, Deakin University, 75 Pigdons Road, Waurn Ponds, VIC, 3216, Australia

    Steven Babaniaris & Rameshkumar Varma

  2. School of Engineering, Deakin University, Geelong, VIC, 3216, Australia

    Aiden Beer

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  1. Steven Babaniaris
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  2. Rameshkumar Varma
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  3. Aiden Beer
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Correspondence to Steven Babaniaris.

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Babaniaris, S., Varma, R. & Beer, A. Ignition and Mechanical Properties of Hot Extruded Magnesium Alloys with Trace Yttrium Additions. JOM 72, 3011–3019 (2020). https://doi.org/10.1007/s11837-020-04115-6

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  • DOI: https://doi.org/10.1007/s11837-020-04115-6

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