Abstract
Up to now, there have been few studies of the temperature-induced liquid–liquidstructure transition (LLST) kinetics for atomic systems. In this paper, throughisothermal and heating experiments, we have investigated the kinetics of theLLST process in Pb–Sn61.9 wt% melt by measuring the electrical resistivity andheat flux. The time evolution of the heat flux and electrical resistivity can bedescribed by the Johnson–Mehl–Avrami model with an Avrami exponent of 3.87,which is an indication of nucleation-growth-type ordering of the nonconservedorder parameter. What is more, we have calculated the reaction rate constantKT and apparentactivation energy ΔE, and deduced the reason for the characteristics of temperature-induced LLST. The resultof this research could be beneficial for a further understanding of the essence of LLST.
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