MOSSBAUER ANALYSIS OF THE EFFECT OF SUBSTITUTIONAL ATOMS ON THE ELECTRONIC CHARGE-DISTRIBUTION IN NITROGEN AND CARBON AUSTENITES

Authors
NADUTOV VM
Citation
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
Citations number
36
Categorie Soggetti
Material Science
Journal title
Materials science & engineering. A, Structural materials: properties, microstructure and processing → ACNP
ISSN journal
09215093
Volume
254
Issue
1-2
Year of publication
1998
Pages
234 - 241
Database
ISI
SICI code
0921-5093(1998)254:1-2<234:MAOTEO>2.0.ZU;2-T
Abstract
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.