| To obtain the fundamental data for the development of ferritic mechanically alloyed ODS steels, the present authors have investigated the effect of three kinds of oxide such as Y₂O₃, Al₂O₃, and TiO₂ on the strain rate, high temperature tensile properties and charpy impact properties of these materials. Due to the most uniform distribution of the finest and spherical particle, ODS steel containing Y₂O₃ raised high temperature tensile and yield strength considerably. Elongation of these materials showed the highest values in containing TiO₂ ODS steel and impact value of these materials showed the highest values in containing Al₂O₃ ODS steel. With increase of strain rate, tensile strengths increased, while elongation increased in the low and high temperature, but decreased at 600℃ showing the maximum elongation. |
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