Mechanism of Surface Reinforcement of Steels by Nanocarbon Materials Using Laser Heating
| Autor: | G. S. Bocharov, E. V. Terentyev, Grigory N. Churilov, O. S. Zilova, A. V. Eletskii, O. V. Chudina, S. D. Fedorovich |
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| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Materials science Fullerene Cementite 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics Laser Microstructure 01 natural sciences Indentation hardness law.invention chemistry.chemical_compound chemistry law Martensite 0103 physical sciences Materials Chemistry Substructure Composite material 0210 nano-technology Eutectic system |
| Zdroj: | Physics of Metals and Metallography. 119:197-201 |
| ISSN: | 1555-6190 0031-918X |
| DOI: | 10.1134/s0031918x18010052 |
| Popis: | The mechanism of the surface reinforcement and wear resistance of steel products are studied as a result of creating the strengthening layers with the nanocarbon using the laser heating. Laser surface treatment using soot remaining after fullerene extraction leads to a more than fivefold increase in the microhardness (up to 1086 HV) and a decrease in the friction coefficient by 20–30%. The conclusion that the reinforcement mechanism involves the formation of eutectic, cementite, martensite, the cellular substructure, and grain refinement is carried out based on metallographic studies of the strengthened layers of technically pure iron with a thickness of 20–70 μm. |
| Databáze: | OpenAIRE |
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