Poisoning Effect of Combined Addition of Fe and Mn on Carbon Inoculation of Mg-3%Al Alloy

Abstract:

The effect of combined addition of Fe and Mn on carbon inoculation of Mg-3% Al alloy was investigated in the present study. The results show that a posioning effect could be found in the samples treated by the combination of carbon inoculation and combined addition of Fe and Mn regardless of the operating sequence of carbon inoculation and combined addition of Fe and Mn. The posioning effect was proposed to be due to the formation of Al-C-O-Mn-Fe-rich intermetallic compounds. These Al-C-O-Mn-Fe-rich intermetallic compounds, actually being Al-C-Mn-Fe phases, should not act as the potent nucleating substrates for -Mg grains, resulting in the grain-coarsening.

• Periodical: Advanced Materials Research (Volumes 393-395)
• Pages: 226-230
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.393-395.226
• Online since: November 2011
• Authors: Ming Hua Wang, Jun Du, Wen Fang Li
• Keywords: Carbon, Grain Refinement, Iron, Manganese, Mg-Al Alloy, Poisoning

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