Structure-phase transformations in electrospark iron-carbon surfaces at different heating temperatures

The results of investigation of the surface structure-base transformation of iron specimens subjected to carbonization by the electrospark method and heating in the temperature range of 20–800°C are given. It is known that, after electrospark alloying with graphite, a surface layer consisting of mai...

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Bibliographic Details
Published in:Surface engineering and applied electrochemistry 2010-12, Vol.46 (6), p.579-581
Main Authors: Mikhailyuk, A. N., Volodina, G. F.
Format: Article
Language:English
Subjects:
Electrical Surface Treatment Methods
Engineering
Machines
Manufacturing
Processes
Online Access:Get full text
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Summary:The results of investigation of the surface structure-base transformation of iron specimens subjected to carbonization by the electrospark method and heating in the temperature range of 20–800°C are given. It is known that, after electrospark alloying with graphite, a surface layer consisting of mainly austenite and cementite forms with a carbon content in γ-Fe. The quantity of the austenite reduces with heating, and, at 300°C, it fully turns into a ferrite-cementite mixture (perlite). The heating of the specimens reduces the value of the microstresses, and the diffraction lines narrow down coming nearer to the annealed armco-iron values.
ISSN:1068-3755
1934-8002
DOI:10.3103/S1068375510060062