Volume interactions between substitutional ’’sp’’ and ’’3d’’ solutes in ferromagnetic iron‐based alloys

摘要: Interactions between some ’’sp’’ (I) and ’’3d’’ (M) elements were previously assumed to exist in steels order explain their mutual segregation on the grain boundaries after tempering at low temperature. In a first part, it is shown that such volume interactions exist, possible investigate them by measuring effects macroscopic (residual resistivities) local (hyperfine fields) properties. The resistivity results are analyzed two band‐conduction model which takes into account pair (S.R.O.). Fe Ni Sb Cr alloys investigated detail. Large Ni‐Sb interaction terms detected spin‐down conduction band of alloys, whereas similar negligible alloys. concentration dependences 121,123Sb N.M.R. spectra confirm results. second one establishes correlation existence large I M ability segregate tempering. Such deduced from changes 121Sb Mossbauer X‐ray diffraction lines as measured both as‐quenched tempered states. segregated phase identified.