MARTENSITIC TRANSFORMATIONS IN LASER PROCESSED COATINGS
| Autor: | VANDENBURG, M, DEHOSSON, JTM, Burg, M. van den |
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| Přispěvatelé: | University of Groningen, Zernike Institute for Advanced Materials |
| Jazyk: | angličtina |
| Rok vydání: | 1993 |
| Předmět: |
Oxide minerals
Materials science TRANSMISSION ELECTRON-MICROSCOPY IRON Spinel Metallurgy General Engineering engineering.material Microstructure SPINEL-TYPE OXIDES COATED STEELS Transmission electron microscopy visual_art Martensite X-ray crystallography visual_art.visual_art_medium engineering Ceramic Composite material INTERFACES Phase diagram |
| Zdroj: | Acta Metallurgica et Materialia, 41(9), 2557-2564 |
| ISSN: | 0956-7151 |
| Popis: | This paper concentrates on laser coating of Fe-22 wt% Cr and a duplex steel SAF2205 by injecting Cr2O3 powder into the melt pool. In particular the work focuses on the stabilization of high temperature distorted spinel phases due to the high quench rates involved as well as on the a quantitative crystallographic analysis of the resulting morphologies. The microstructure observed in TEM indicates that the material does not solidify in the distorted spinel structure. The presence of a small amount of cubic (Fe, Cr)-spinel suggests that the distorted spinel in fact might be nucleated from the cubic spinel phase. The plate like morphology of the distorted spinel phase in combination with the twinned internal structure of the plates put forward the idea that the transformation might be martensitic. Martensitic calculations executed with the lattice parameters of the cubic and distorted (Fe, Cr)-spinel phases are in excellent agreement with the experimental data confirming that the transformation might be martensitic indeed. |
| Databáze: | OpenAIRE |
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