TY - JOUR N2 - Ferrtic/martensitic and ODS steels were fabricated by the mechanical alloying process, and their microstructures and mechanical properties were investigated. The 9Cr-1W and 9Cr-1W-0.3Ti-0.35Y2O3 (in wt.%) steels were prepared by the same fabrication process such as mechanical alloying, hot isostatic pressing, and hot rolling processes. A microstructural observation of these steels indicated that the Ti and Y2O3 additions to 9Cr-1W steel were significantly effective to refine the grain size and form nano-sized Y-Ti-O oxide particles. As a result, the tensile strengths at room and elevated temperatures were considerably enhanced. Considerable improvement of the creep resistances at 700°C was also evaluated. It is thus concluded that 9Cr-1W ODS steel with Ti and Y2O3 additions would be very effective in improving the mechanical properties especially at elevated temperatures. L1 - http://journals.pan.pl/Content/115066/PDF/AMM-2020-1-42-SH%20Noh.pdf L2 - http://journals.pan.pl/Content/115066 PY - 2020 IS - No 1 EP - 341 DO - 10.24425/amm.2020.131735 KW - 9Cr-1W steel KW - oxide dispersion strengthening (ODS) KW - grain refinement KW - nano-oxide particle KW - creep resistance A1 - Kim, Ga Eon A1 - Kim, Tae Kyu A1 - Noh, Sanghoon PB - Institute of Metallurgy and Materials Science of Polish Academy of Sciences PB - Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences VL - vol. 65 DA - 2020.03.11 T1 - Difference of Microstructures and Mechanical Properties between 9Cr-1W Ferritic/martensitic Steel and ODS Steel SP - 337 UR - http://journals.pan.pl/dlibra/publication/edition/115066 T2 - Archives of Metallurgy and Materials ER -