The volume fraction evolution in nanocrystallizing Al-Y-Ni-Fe alloy studied by means of electrical resistivity

Abstract

The Al₈₆Y₅Ni₅Fe₄ amorphous and partially nanocrystalline alloys were investigated by means of differential scanning calorimetry (DSC), temperature coefficient of resistivity (TCR) and Transmission Electron Microscopy. The resistivity vs. temperature isochronal relation was used to calculate the transformed volume fraction, x(T), in the first stage of transformation. The comparison between these results and the DSC ones show that the TCR method is more correct for the nanocrystallization process analysis.