Nuclear Engineering and Technology · 2017 · 74 citations · 37 references
Natural SciencesMaterials EngineeringMaterials ScienceMechanical Behavior Of MaterialsMetallic MaterialsMetallurgyAlloysGrain RefinementGrain Structure FormationMetalsSteel MaterialsStrengthening MechanismsFerritic SteelsHot Isostatic PressingMechanical AlloyingMicrostructureOxide Dispersion Strengthened SteelsOxide Dispersion StrengtheningOxide Dispersion-strengthened AlloysTensile Strength
To study the effects of zirconium (Zr) addition on the microstructure, hardness and the tensile properties of oxide dispersion strengthened (ODS) ferritic–martensitic steels, two kinds of 9Cr-ODS ferritic–martensitic steels with nominal compositions (wt.%) of Fe-9Cr-2W-0.3Y2O3 and Fe-9Cr-2W-0.3Zr-0.3Y2O3 were fabricated by the mechanical alloying (MA) of premixed powders and then consolidated by hot isostatic pressing (HIP) techniques. The experimental results showed that the average grain size decreases with Zr addition. The trigonal δ-phase Y4Zr3O12 oxides and body-centered cubic Y2O3 oxides are formed in the 9Cr-Zr-ODS steel and 9Cr non-Zr ODS steel, respectively, and the average size of Y4Zr3O12 particles is much smaller than that of Y2O3. The dispersion morphology of the oxide particles in 9Cr-Zr-ODS steel is significantly improved and the number density is 1.1 × 1023/m3 with Zr addition. The 9Cr-Zr-ODS steel shows much higher tensile ductility, ultimate tensile strength and Vickers hardness at the same time.
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Stability of ferritic MA/ODS alloys at high temperatures
M.K. Miller, D. Hoelzer, E. A. Kenik et al. · Intermetallics · 2004 · 257 citations
Natural Sciences, Materials Engineering, Materials Science +13
Clara Panait, W. Bendick, A. Fuchsmann et al. · International Journal of Pressure Vessels and Piping · 2010 · 237 citations · Full text
Natural Sciences, Materials Engineering, Materials Science +13