Study on Surface Metallurgy High Speed Steel Using Double Glow Plasma Technique

Abstract:

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Mo-Cr diffusion layer on carbon steels are prepared by double glow plasma surface metallurgy and then treated by ultra-saturated carbonization, quenching and tempering. The content of component is roughly that of high-speed steels (HSS). The results showed that the depth of coating is over 100μm and the content of Mo, Cr alloyed layer is about 20% and 10% respectively. Surface carbon content is over 2.0% after ultra-saturated carbonization. The carbides of the alloyed layer are fine and dispersed, without coarse eutectic ledeburite. X-ray diffraction showed that the carbides are M6C, M2C, M23C6 etc. SEM analyse indicated that the dimension of surface carbide is less 1μm. The abrasion experimental results showed that the relative wear resistance of the treated sample was 2.38 times as that of quenched GCr15.

Info:

Periodical:

Key Engineering Materials (Volumes 353-358)

Edited by:

Yu Zhou, Shan-Tung Tu and Xishan Xie

Pages:

1708-1711

DOI:

10.4028/www.scientific.net/KEM.353-358.1708

Citation:

J. Y. Xu et al., "Study on Surface Metallurgy High Speed Steel Using Double Glow Plasma Technique", Key Engineering Materials, Vols. 353-358, pp. 1708-1711, 2007

Online since:

September 2007

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Price:

$35.00

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