Microstructures of Surface Alloyed Carbon Steel Fabricated by Ferrous-Tungsten and Carbon Powders

Chang Qing Guo

doi:10.4028/www.scientific.net/AMR.634-638.3038

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 634-638Microstructures of Surface Alloyed Carbon Steel...

Microstructures of Surface Alloyed Carbon Steel Fabricated by Ferrous-Tungsten and Carbon Powders

Abstract:

A surface alloyed process that adopted ferrous-tungsten and carbon powders as reactants to in-suite synthesize WC reinforcement particles with the assistance of molten carbon steel was attempted in this paper. Results showed that the surface alloyed layer is dense and there are no obvious defects. Microstructures from surface to core are consisted of three different layers, i.e., the top surface alloyed layer, the interim transitional layer and the bottom matrix steel. There are no any WC particles formed in the surface alloyed layer which is consisted of dendrite matrix and inter-dendritical net eutectics and carbides. The net carbides have two types: one is WC or W2C; the other is M7C3. Few large metal tungsten particles are distributed at part bottom of the surface alloyed layer. The microstructure in the transitional layer is consisted of large amounts of pearlites and certain amounts of net carbides.

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Periodical:

Advanced Materials Research (Volumes 634-638)

Pages:

3038-3043

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.634-638.3038

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Cite this paper

Online since:

January 2013

Authors:

Chang Qing Guo

Keywords:

Carbon Powders, Carbon Steel, Ferrous-Tungsten Powders, Infiltration, Surface Alloying

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