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논문 기본 정보

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학술저널
저자정보
Meza A. (Universidad Carlos III de Madrid (UC3M)) Macía E. (Universidad Carlos III de Madrid (UC3M)) Serrano M. (Structural Materials Division, Technology Department, CIEMAT) Merten C. (Fraunhofer Institute for Manufacturing Technology and Advanced Materials IFAM) Gaitzsch U. (Fraunhofer Institute for Manufacturing Technology and Advanced Materials IFAM) Weißgärber T. (Fraunhofer Institute for Manufacturing Technology and Advanced Materials IFAM) Campos M. (Universidad Carlos III de Madrid (UC3M))
저널정보
한국원자력학회 Nuclear Engineering and Technology Nuclear Engineering and Technology Vol.56 No.7
발행연도
2024.7
수록면
2,584 - 2,594 (11page)
DOI
10.1016/j.net.2024.02.018

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A novel approach to incorporating oxide formers into ferritic ODS production has been developed using the coprecipitation technique. This method enables the tailored design of complex nano-oxides, integrated during Mechanical Alloying (MA) and precipitated during Spark Plasma Sintering (SPS) consolidation. Findings illustrate that co-precipitation effectively produces nano-powders with customised compositions, enriching Y, Ti, and Zr in the ferritic grade to condition subsequent oxide precipitation. While the addition of Y–Ti–Zr–O nano-oxides did not prevent the formation of Y–Al–O and Al-containing nano-oxides, these were refined thanks to the presence of well-dispersed Zr. Additionally, the Spark Plasma Sintering (SPS) parameters were optimised to tailor the bimodal grain size distribution of the ODS steels, aiming for favourable strength-to-ductility ratios. Comprehensive microstructural analyses were performed using SEM, EDS, EBSD, and TEM techniques, alongside mechanical assessments involving microtensile tests conducted at room temperature and small punch tests carried out at room temperature, 300 ◦C, and 500 ◦C. The outcomes yielded promising findings, showcasing similar or better performance with conventionally manufactured ODS steels. This reinforces the effectiveness and success of this innovative approach.

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