Vm. Nadutov, MOSSBAUER ANALYSIS OF THE EFFECT OF SUBSTITUTIONAL ATOMS ON THE ELECTRONIC CHARGE-DISTRIBUTION IN NITROGEN AND CARBON AUSTENITES, Materials science & engineering. A, Structural materials: properties, microstructure and processing, 254(1-2), 1998, pp. 234-241
The isomeric shifts and quadrupole splitting of lines in Mossbauer spe
ctra of alloyed Fe-Mn-N(C), Fe-Mn-Cr-N(C), Fe-Ni-N(C) and Fe-Mn-Cr-Ni-
N(C) austenites were analyzed in comparison to binary Fe-N and Fe-C al
loys, A change of the s-electron density at the Fe nuclei by N and C n
earest neighbours in alloyed austenite is observed in the same way it
was established in binary Fe-N and Fe-C alloys. An opposite influence
of Mn and Cr atoms on the change of charge density at the Fe nuclei in
nitrogen and carbon austenites is shown. The effect of Ni on the s-el
ectron density depends on its concentration. The quadrupole interactio
n parameter is analyzed. The distortion of the symmetry of the electro
nic charge distribution near Fe atoms in both nitrogen and carbon aust
enites upon alloying with Mn, Cr and Ni is less than that caused by C
and N nearest neighbours. (C) 1998 Elsevier Science S.A. All rights re
served.