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Título : | Effect of mechanical alloying on the microstructural evolution of a ferritic ODS steel with (YeTieAleZr) addition processed by Spark Plasma Sintering (SPS) |
Autor : | Macia, E. García-Junceda, A. Serrano, M. Hong, S.J. Campos, M. |
Palabras clave : | ODS steel Mechanical alloying Spark plasma sintering (SPS) Recrystallization Small punch test |
Fecha de publicación : | 10-feb-2021 |
Editorial : | Elsevier |
Citación : | Macía, E., García-Junceda, A., Serrano, M., Hong, S. J., & Campos, M. (2021). Effect of mechanical alloying on the microstructural evolution of a ferritic ODS steel with (Y–Ti–Al–Zr) addition processed by Spark Plasma Sintering (SPS). Nuclear Engineering and Technology, 53(8), 2582-2590. |
Resumen : | The high-energy milling is one of the most extended techniques to produce Oxide dispersion
strengthened (ODS) powder steels for nuclear applications. The consequences of the high energy mill
process on the final powders can be measured by means of deformation level, size, morphology and
alloying degree. In this work, an ODS ferritic steel, Fee14Cre5Ale3W-0.4Ti-0.25Y2O3-0.6Zr, was fabricated
using two different mechanical alloying (MA) conditions (Mstd and Mact) and subsequently
consolidated by Spark Plasma Sintering (SPS). Milling conditions were set to evidence the effectivity of
milling by changing the revolutions per minute (rpm) and dwell milling time. Differences on the particle
size distribution as well as on the stored plastic deformation were observed, determining the consolidation
ability of the material and the achieved microstructure. Since recrystallization depends on the
plastic deformation degree, the composition of each particle and the promoted oxide dispersion, a dual
grain size distribution was attained after SPS consolidation. Mact showed the highest areas of ultrafine
regions when the material is consolidated at 1100 C. Microhardness and small punch tests were used to
evaluate the material under room temperature and up to 500 C. The produced materials have attained remarkable mechanical properties under high temperature conditions. |
URI : | http://documenta.ciemat.es/handle/123456789/4482 |
Aparece en las colecciones: | Artículos de Tecnología
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