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Effect of Ti, B, Zr Elements on Grain Refinement and Castability of Al-4wt%Mg-0.9wt%Si-0.3wt%Mn-0.15wt%Fe Casting Alloy
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  • Journal title : Journal of Korea Foundry Society
  • Volume 35, Issue 5,  2015, pp.120-127
  • Publisher : The Korean Foundrymens Society
  • DOI : 10.7777/jkfs.2015.35.5.120
 Title & Authors
Effect of Ti, B, Zr Elements on Grain Refinement and Castability of Al-4wt%Mg-0.9wt%Si-0.3wt%Mn-0.15wt%Fe Casting Alloy
Kim, Heon-Joo; Park, Su-Min;
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The effects of Ti, B and Zr on grain refinement and castability were investigated in Al-4wt%Mg-0.9wt%Si-0.3wt%Mn-0.15wt%Fe alloy. Measurement of cooling curve and micro-structure observation were performed to analyze the effects of the addition of minor elements Ti, B and Zr during solidification. The prominence of effect on grain refinement was in increasing order for Ti, Zr and B element. Fine grain size and an increase of the crystallization temperature for -Al solution were evident as the amount of addition elements increased in this study. Addition of 0.15wt% Ti was most effective for grain refinement, and the resulting grain size of -Al solution for shell mold and steel mold were and , respectively. Fluidity and shrinkage tests were perform to evaluate the castability of the alloy. Maximum fluidity length and minimum ratio of micro shrinkage were recorded for 0.15wt% Ti addition due to the effect of the finest grain size.
Grain refinement;Fluidity test;Shrinkage test;Al-4wt%Mg-0.9wt%Si-0.3wt%Mn-0.15wt%Fe alloy;
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