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)

E. Macía; A. García-Junceda; M. Serrano; S.J. Hong; M. Campos

doi:https://doi.org/10.1016/j.net.2021.02.002

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자료유형: 학술저널

저자정보: E. Macía (Universidad Carlos III de Madrid (UC3M)) A. García-Junceda (IMDEA Materials Institute) M. Serrano (Structural Materials Division, Technology Department) S.J. Hong (d Division of Advanced Material Engineering Kongju National Univerity) M. Campos (Universidad Carlos III de Madrid (UC3M))

저널정보: 한국원자력학회 Nuclear Engineering and Technology Nuclear Engineering and Technology 제53권 제8호

발행연도: 2021.8

수록면: 2,582 - 2,590 (9page)

DOI: https://doi.org/10.1016/j.net.2021.02.002

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The high-energy milling is one of the most extended techniques to produce Oxide dispersionstrengthened (ODS) powder steels for nuclear applications. The consequences of the high energy millprocess on the final powders can be measured by means of deformation level, size, morphology andalloying 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 subsequentlyconsolidated by Spark Plasma Sintering (SPS). Milling conditions were set to evidence the effectivity ofmilling by changing the revolutions per minute (rpm) and dwell milling time. Differences on the particlesize 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 theplastic deformation degree, the composition of each particle and the promoted oxide dispersion, a dualgrain size distribution was attained after SPS consolidation. Mact showed the highest areas of ultrafineregions when the material is consolidated at 1100 C. Microhardness and small punch tests were used toevaluate the material under room temperature and up to 500 C. The produced materials have attainedremarkable mechanical properties under high temperature conditions.

#ODS steell Mechanical alloyingl Spark plasma sintering (SPS)l Recrystallizationl Small punch test

참고문헌 (2)

참고문헌 신청

W.Z. Xu / 2014 / Nano ZrO2 particles in nanocrystalline Fe–14Cr–1.5Zr alloy powders / Journal of Nuclear Materials 452(1-3):434~439

N. García-Rodríguez / 2014 / Capability of mechanical alloying and SPS technique to develop nanostructured high Cr, Al alloyed ODS steels / Materials Science and Technology 30(13):1676~1684

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