%0 Journal Article
%A Sari, A. H.
%A Astashynski, Valiantsin M.
%A Kostyukevich, E. A.
%A Kuzmitski, Anton M.
%A Uglov, Vladimir V.
%A Cherenda, Nikolai N.
%A Petukhou, Yu. A.
%D 2012
%I Begell House
%K compression plasma flow, surface alloying, austenitic steel, zirconium nitride
%N 4
%P 297-313
%R 10.1615/HighTempMatProc.2014011948
%T AUSTENITIC STEEL SURFACE ALLOYED WITH ZIRCONIUM USING COMPRESSION PLASMA FLOW
%U https://www.dl.begellhouse.com/journals/57d172397126f956,6aa9f0494a844a11,1e2ac15a75ca982a.html
%V 16
%X In this study, the effect of a nitrogen compression plasma flow on the microstructural, mechanical, and tribological properties, as well as the elemental and phase compositions of a Zr/austenitic steel system, has been investigated. The Zr/steel system was exposed to a single pulse of the compression plasma flow or to a series of pulses of different energies. The plasma pulse duration and discharge current were 100 µs and 80 kA, respectively. The samples were characterized by scanning electron microscopy, X-ray diffraction, energy dispersive X-ray analyses, and subjected to Vickers microhardness and friction tests. The findings showed the formation of a surface modified layer alloyed by Zr depending on the absorbed energy value was about 12−20 µm. An increase in both the number of pulses and absorbed energy density provides a more uniform zirconium distribution in the modified layer. The surface microhardness and wear resistance of the treated samples increased by factors of 1.6 and 5.4, respectively. The modified layer contains α- and γ-iron-based solid solutions, the Fe23Zr6 intermetallic compound, and ZrN and Cr2N nitrides due to nitrogen diffusion.
%8 2014-10-24