Effect of Nanostructurisation of Structural Steels on its Wear Resistance and Hydrogen Embittlement Resistance

Abstract:

Surface mechanical pulse treatment of medium-carbon low alloyed steels by high speed friction has been developed. Its major features are surfaces provided with the nanostructure with grain size of 20...50 nm, increased surface hardness and, correspondingly wear resistance. This nanostructure is subjected to the tempering temperature of 500 °С. Hydrogen charging of the strengthening materials decreases their plasticity, more considerably in steels with higher carbon content. However, it is possible to use mechanical pulse treatment to achieve high characteristics of strength, wear resistance and plasticity in hydrogen, selecting as-received matrix structure and the tempering temperature after surface treatment.

• Periodical: Solid State Phenomena (Volume 225)
• Pages: 65-70
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.225.65
• Online since: December 2014
• Authors: Hryhoriy Nykyforchyn*, Volodymyr Kyryliv, Olga Maksymiv
• Keywords: Hydrogen Embrittlement, Mechanical Pulse Treatment, Microhardness, Nanostructure, Wear

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