Complex study of the phase composition of powdered stock for high-speed steel ROM2F3

Conclusions

By a complex of methods we succeeded in determining the phase composition of powders intended for the production of high-speed steel ROM2F3 by the method of powder metallurgy. By chemical differentiation of the carbides and solid solutions (α-Fe, γ-Fe) we established qualitatively the prescribed composition of the carbides MC and M₂C, and in monoliths the composition of M₆C. The distribution of elements between the carbides MC and M₂C was demonstrated, and their quantities and composition determined. The energy spectra obtained from carbide particles showed that in vanadium base MC and in molybdenum M₂C a very small amount of iron is dissolved (in the form of impurities).

It was the first time that x-ray microspectrometric analysis was used in combination with investigations of carbides in the powders of high-speed steels in the regime of secondary emission and with emission spectroscopy with a plasma source of excitation (in determining some elements).