Effects of Strong Carbide-Forming Elements on Low Temperature Salt-Bath Chromizing

Abstract:

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The microstructure, phase structure, white layer thickness and chromium concentration, microhardness of the chromized layer of T10 steel and 3Cr2W8V steel by low temperature salt-bath chromizing with plasma nitriding are contrasted. The chromizing process is investigated by means of optical microscopy (OM), scanning electron microscopy (SEM), X-ray diffraction (XRD). Results show that the strong carbide-forming elements (Cr, W, V) obstruct the diffusion of chromium and carbon, the white layer thickness and microhardness, surface chromium concentration of the chromized layer are reduced. A chromized layer of T10 steel with average 7.3μm in thickness, 84.47% in surface chromium concentration and 1300HV-1400HV in microhardness is formed on the substrate by chromizing at 610°C for 6h, as compared to the chromized layer of 3Cr2W8V steel with average 3.3μm in thickness, 74.27% in surface chromium concentration and 1200HV-1300HV in microhardness.

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Periodical:

Edited by:

Zeng Zhu

Pages:

646-650

DOI:

10.4028/www.scientific.net/AMR.214.646

Citation:

J. L. Ye and F. Ye, "Effects of Strong Carbide-Forming Elements on Low Temperature Salt-Bath Chromizing", Advanced Materials Research, Vol. 214, pp. 646-650, 2011

Online since:

February 2011

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$35.00

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