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Use of X‐Ray Diffuse Scattering Data for the Construction of the Fe‐Si Equilibrium Diagram
Author(s) -
Semenovskaya S. V.,
Umidov D. M.
Publication year - 1974
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2220640225
Subject(s) - phase diagram , fourier transform , scattering , diagram , field (mathematics) , phase (matter) , materials science , range (aeronautics) , solid solution , computational physics , condensed matter physics , physics , optics , mathematics , quantum mechanics , statistics , pure mathematics , composite material , metallurgy
The Fourier‐transforms of interchange energies were determined by the method of X‐ray diffuse scattering from single crystals of disordered Fe‐Si solid solutions. The values of Fourier transforms obtained were used to calculate the free energy in the self‐consistent field approximation and to construct equilibrium Fe‐Si diagrams within the composition range of 0 to 50 at% Si. The diagram calculated contains a two‐phase α 1 + α 2 field at high temperatures and a two‐phase α + α 1 field at low temperatures. The situation of the phase boundaries is in good accordance with the experimentally observed one.