Diffusion layers formation under deformed iron alloys surface saturation by nitrogen

Authors

  • L. D. Demchenko National Technical University of Ukraine "Kyiv Polytechnic Institute", Ukraine

DOI:

https://doi.org/10.24144/2415-8038.2003.14.20-26

Abstract

Nitrided α-Fe and Fe-Cr alloys after preliminary plastic deformation (PPD) were investigated by means of metallography, X-ray diffractometry, microhardness test, electron microscopy and Messbauer spectroscopy. It was established that nitrided layers consisted of nitride ε- i γ'- phases and α- solid solution of nitrogen in Fe and alloys. It was shown that the existence of narrow regions of deformation 3-8 % and 20-30 % in which the considerable (2 times) increase in microhardness of surface diffusion was observed after nitriding. The microhardness correlation of diffusion layer with its structure, phase composition and thickness of nitrided phases layers was found.


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Published

2003-12-25

Issue

Vol. 14 (2003)

Section

Статті

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Copyright (c) 2003 Scientific Herald of Uzhhorod University.Series Physics

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