Abstract
The effect of the additive value of three rare earth metals individually (lanthanum, cerium, and yttrium) on the crystallization parameters of cast iron was studied. The study was carried out using a differential scheme for measuring cooling temperatures using the ФПК -59 device. As a result of the conducted studies, a similar effect of experimental rare earth metals on the crystallization parameters of rolled cast iron was shown. Additives of rare earth metals, which led to the greatest changes in the crystallization parameters and the formation of spherical graphite inclusions in the structures of modified cast irons, were different. When modifying cast iron melt to produce spherical graphite, yttrium must be added less than cerium or lanthanum.
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