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DSC and TA characteristics of the inoculated Al-Zn20 alloy

Krajewski W. K., Buraś J., Piwowarski G., Haberl K., Tsivoulas D.

Archives of Foundry Engineering

2011

Vol. 11, iss. 1

65-68

The paper brings information about inoculation process of the sand-cast binary Al-20 wt% Zn (AlZn20) alloy, inoculated with Ti-containing grain-refiners, i.e. AlTi5B1, AlTi3C0.15 and (AlZn)-Ti3 master alloys (MA). During the experiments thermal analyses (TA) and differential scanning calorimetry (DSC) were used. Macrostructure observations were performed using light microscopy (LM). On the basis of the performed examinations it was found that all the MAs used in this work caused significant grain refinement, which initiates via a heterogeneous nucleation mode. The obtained structure fineness of the inoculated AlZn20 alloy should positively influence its ductility, which is of great importance for the practical application of this group of foundry alloys.