Improvement of surface layer properties of some constructional steels induced by applying thermodiffusional duplex treatment Online publication date: Wed, 09-Nov-2011
by Dragomir Krumes; Mirko Stubičar; Ivica Kladarić; Andrijana Milinović; Catalin Ducu
International Journal of Microstructure and Materials Properties (IJMMP), Vol. 6, No. 5, 2011
Abstract: The contribution deals with the preliminary results obtained in investigation concerning application of the duplex treatment to the low-carbon and low-alloyed steel samples (C45E, C15E, 42CrMo4 and 20MnCr5). The duplex treatment included boronising (at 900°C for 4 h in Ekabor 3 powder) and subsequent plasma nitriding processes (at 520°C for 40 minutes, 30 vol% nitrogen and 70 vol.% hydrogen, using PN-Mono 5 unit). In this study, the case and core properties of treated steels have been investigated experimentally by using: optical microscopy and SEM observations, X-ray diffraction analysis and measurements of microhardness profile on the cross-section of the treated steel samples. The results obtained by the above techniques are mutually consistent, and they are in agreement with the findings obtained by other researchers.
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