Abstract
Structural-phase transformations in the α-Fe+Fe2B composite with a total boron content of 15 at. % during mechanical grinding in a planetary ball mill have been studied using X-ray diffraction, Mossbauer spectroscopy, and magnetic measurements. It has been established that dissolution of the Fe2B boride with the formation of an amorphous phase and segregations of boron atoms at grain boundaries occur after the grain size reaches 3 nm. In this work a comparative analysis of the deformation-induced dissolution of Fe2B and Fe3C in the Fe-B and Fe-C systems has been made and the possible mechanisms of the structural-phase transformations have been discussed.
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