Effect of Annealing Conditions on the Dissolution Process of Complex Carbonitrides in a V-Nb-Ti Microalloyed Steel
| Autor: | Ervis Díaz, Gloria Basanta, Carlos Parra, A.L. Rivas |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
Annealing (metallurgy) Mechanical Engineering Metallurgy 02 engineering and technology engineering.material 021001 nanoscience & nanotechnology Condensed Matter Physics 020501 mining & metallurgy 0205 materials engineering Mechanics of Materials engineering General Materials Science Microalloyed steel 0210 nano-technology Dissolution |
| Zdroj: | Materials Science Forum. 941:21-26 |
| ISSN: | 1662-9752 |
| DOI: | 10.4028/www.scientific.net/msf.941.21 |
| Popis: | The present work has been undertaken to assess the evolution of dissolution process of large dendritic precipitates in a V-Nb-Ti microalloyed steel. The study was performed by reheating the samples at 1250°C, simulating the industrial reheating practices at laboratory scale and in situ, following industrial profile; afterwards the samples were quenched in 10%NaCl aqueous solution. The characterization of the material was carried out by scanning electron microscopy accompanied with dispersive energy spectrometry, and chemical analysis by inductively coupled plasma optical emission spectrometry. The results showed a partial dissolution of dendritic precipitates. This process ocurred by a progressive dissolving the Nb-rich shells formed over cuboidal particles and primary arm of well-faceted dendritic precipitates, and by fragmentation and spheroidization of secondary branches. These processes gave rise to spherical Nb rich precipitates and cuboidal particles at the reheating conditions used in this study. Both type of particles contain vanadium. |
| Databáze: | OpenAIRE |
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