Investigations of Electron Beam Hardening on TiAlN Coated Heat-Treatable Steel
| Autor: | Horst Biermann, Günter Bräuer, Gundis Grumbt, M. Keunecke, Rolf Zenker, Kai Weigel, K. Bewilogua |
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| Přispěvatelé: | Publica |
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Polymers and Plastics 02 engineering and technology Electron engineering.material hard coating 01 natural sciences Temperature measurement Coating Sputtering 0103 physical sciences Case hardening 010302 applied physics reactive magnetron sputtering Metallurgy Metals and Alloys Penetration (firestop) 021001 nanoscience & nanotechnology electron beam hardening Ti(1-x)AlxN Mechanics of Materials Ceramics and Composites engineering Hardening (metallurgy) Cathode ray duplex treatment 0210 nano-technology |
| Zdroj: | Materials Performance and Characterization. 6:20170025 |
| ISSN: | 2379-1365 |
| DOI: | 10.1520/mpc20170025 |
| Popis: | In this investigation, an electron beam hardening (EBH) procedure was applied to heat-treatable steel 51CrV4 coated with Ti(1-x)AlxN hard coatings, where x ranged from 0.3 to 0.6. The coatings with variable composition and mechanical properties were deposited by reactive magnetron sputtering. For electron beam surface hardening following hard coating deposition, the energy distribution within the energy transfer field caused a nearly constant hardening temperature on the treated material surface. Morphology, composition, and mechanical properties of the coatings remained mostly unchanged, whereas the coating-substrate interface and the steel surface region were highly modified. Diffusion of the near-interface coating elements into the substrate occurred, and the corresponding region of the substrate showed clear changes in morphology and composition. These changes can be correlated with substantial improvements of the coating adhesion properties. Based on temperature measurements and calculations of electron penetration depths, a plausible description of the observed effects was derived. The EBH caused a significant improvement of delamination resistance, especially for coatings with insufficient adhesion properties. |
| Databáze: | OpenAIRE |
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