Discontinuous Precipitation in a High-Nitrogen Austenitic Steel

Abstract:

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The discontinuous precipitation of a high-nitrogen (0.8 wt%) austenitic steel has been investigated after successive steps of heat treatment at two different temperatures (800 and 850 °C). After each step of heating the material has been examined by X-ray diffraction (XRD), optical microscopy (OM), transmission electron microscopy (TEM), Auger electron spectroscopy (AES) and microhardness tests. The precipitation of Cr2N induces the formation of a secondary austenitic phase, leads to the redistribution of N between transformed and untransformed zones and to local variations of mechanical properties.

Info:

Periodical:

Materials Science Forum (Volumes 638-642)

Main Theme:

Edited by:

T. Chandra, N. Wanderka, W. Reimers , M. Ionescu

Pages:

3597-3602

DOI:

10.4028/www.scientific.net/MSF.638-642.3597

Citation:

L. Rovatti et al., "Discontinuous Precipitation in a High-Nitrogen Austenitic Steel", Materials Science Forum, Vols. 638-642, pp. 3597-3602, 2010

Online since:

January 2010

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$35.00

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