The viscosity of binary Al-Fe melts in the Al-rich areaстатья
Статья опубликована в высокорейтинговом журнале
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Аннотация:The temperature and concentration dependencies of the kinematic viscosity of liquid binary alloys of Al-Fe (up to 6.5 at.% Fe) have been studied. For the melts with an iron content less than 1.5% the deviation of the viscosity polytherms from the Arrhenius dependence polytherms has been found presumably due to the structural transformation in liquid aluminum. Hysteresis of the temperature dependences of viscosity of the melts with an iron content of 3 to 6.5% obtained during heating and subsequent cooling has been found. Hysteresis of the viscosity polytherms is the result of irreversible destruction of nonequilibrium atomic microgroups, supposedly, Al5Fe2-type clusters, which are formed by the melting of the Al3Fe crystals. (C) 2014 Elsevier B.V. All rights reserved.