Steel Surface Modification with Carbon Nanomaterial Using Concentrated Energy Flows

• Published in: Metal science and heat treatment Vol. 60; no. 5-6; pp. 367 - 372
• Main Authors: Chudina, O. V., Eletskii, A. V., Terent’ev, E. V., Bocharov, G. S.
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.09.2018; Springer; Springer Nature B.V
• Subjects: Carbon; Cellular structure; Characterization and Evaluation of Materials; Chemistry and Materials Science; Classical Mechanics; Disintegration; Electron beam processing; Engineering Thermodynamics; Hardness (Materials); Heat and Mass Transfer; Laser beam heating; Martensite; Materials Science; Medical lasers; Metallic Materials; Microhardness; Nanomaterials; Structural steel; Structural steels; Technology application; Treatment Using Highly Concentrated Energy Sources; carbon nanomaterials; steel; commercial iron; microstructure; laser treatment; microhardness; modification; electron-beam treatment
• ISSN: 0026-0673; 1573-8973
• DOI: 10.1007/s11041-018-0285-3

Surface strengthening of structural steels with carbon nanomaterials using laser and electron-beam heating is studied. It is shown that during laser treatment the maximum microhardness of a modified layer is achieved in a strengthened zone up to 70 μm thick with q = 9 × 10 4 W/cm 2 , and with electron beam treatment in a strengthened zone up to 300 μm thick with q = 4.6 × 10 4 W/cm 2 . It is established that in both cases with optimum treatment regimes strengthening is due to forming martensite, a cellular structure, and grain disintegration.