Investigation of the intermediate layers formed by austenitic nitrocarburizing

Godzsák, Melinda and Pekker, Péter and Cora, Ildikó and Veres, Zsolt (2016) Investigation of the intermediate layers formed by austenitic nitrocarburizing. INTERNATIONAL JOURNAL OF MICROSTRUCTURE AND MATERIALS PROPERTIES, 11 (1-2). pp. 34-47. ISSN 1741-8410

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By nitriding the Fe-N system above the eutectoid temperature (592°C), an intermediate layer called (nitro)austenite is formed under the compound layer that can transform into braunite during low-rate cooling at eutectoid temperature. The two-phase complement of structure forming such a way - namely the braunite - is an eutectoid consisting of body-centred cubic α-iron and Fe4N iron-nitride compound (α + γ´). This poorly investigated texture and its formation was investigated. During our experiments, 100Cr6 and C105U steels were nitrocarburised above the eutectoid temperature (592°C). The conditions and properties of the formation of the developed intermediate layers, the microstructure and the distribution of the nitrogen and carbon in the specimens were investigated by using light optical microscopy (LOM), microhardness measurements, X-ray diffraction (XRD) method, scanning (SEM) and transmission (TEM) electronmicroscopy and glow discharge optical emission spectrometry (GD-OES).

Item Type: Article
Uncontrolled Keywords: Iron Compounds; Microhardness measurement; Light optical microscopies; Intermediate layers; Glow discharge optical emission spectrometries; Body-centred cubic; X ray diffraction; Optical emission spectroscopy; Nitrogen; Glow discharges; Carbonitriding; CARBON; Nitrogen pearlite; Nitrocarburising; Nitroaustenit; Fe-N eutectoid temperature; Braunite; 592°C
Subjects: Q Science / természettudomány > QC Physics / fizika
T Technology / alkalmazott, műszaki tudományok > T2 Technology (General) / műszaki tudományok általában
Depositing User: MTMT SWORD
Date Deposited: 19 Sep 2016 08:09
Last Modified: 19 Sep 2016 08:09

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