Oxide dispersion-strengthened steels: A comparison of some commercial and experimental alloys

Klueh, R.L.; Shingledecker, John; Swindeman, R.W.; Hoelzer, David T.

doi:10.1016/j.jnucmat.2005.01.017

Cited by 516 publications

(266 citation statements)

References 25 publications

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“…The structural refinement by DPD makes PM2000 very hard and increases the UTS to 1480 MPa, which is significantly higher than the strength in the as-received condition and the UTS previously reported for PM2000 and other ODS steels such as mechanically alloyed MA956 and MA957 [26]. The strength of PM2000 after DPD is also higher than that of the modified 9Cr-1Mo steel processed by DPD to a similar strain, in which the UTS is only 1240 MPa [8].…”

Section: Nanostructure and Strengthmentioning

confidence: 65%

Oxide dispersion-strengthened steel PM2000 after dynamic plastic deformation: nanostructure and annealing behaviour

Zhang

Tao²,

Mishin

et al. 2016

J Mater Sci

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The microstructure, texture and mechanical properties have been studied in PM2000 compressed via dynamic plastic deformation to a strain of 2.1. It is found that dynamic plastic deformation results in a duplex h111i ? h100i fibre texture and refines the initial microstructure by nanoscale lamellae, which substantially increases the strength of the material, but decreases its thermal stability. In the as-deformed microstructure, the stored energy density is found to be higher in h111i-oriented regions than in h100i-oriented regions. Recovery during annealing at 715°C reduces the energy stored in the deformed microstructure. This reduction is more pronounced in the h111i-oriented regions. Orientation-dependent recrystallisation takes place in the recovered microstructure, leading to strengthening of the h111i fibre texture component at the expense of the h100i fibre texture component.

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Section: Nanostructure and Strengthmentioning

confidence: 65%

Oxide dispersion-strengthened steel PM2000 after dynamic plastic deformation: nanostructure and annealing behaviour

Zhang

Tao²,

Mishin

et al. 2016

J Mater Sci

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“…It is important to remark that the above there might have occurred because Fe14CrYWTi, due to its high strength in the as HIP condition, had to be forged at $50 K above the temperature used for Fe14CrY. The discrepancies between the temperature behavior of the mechanical properties for some commercial ODS steels and the ODS 12YWT alloy have been attributed to the effect of the grain size and recrystallized structure at low temperature, which is larger than that corresponding to dispersion strengthen ing [19].…”

Section: Tensile Propertiesmentioning

confidence: 99%

Microstructure and tensile properties of oxide dispersion strengthened Fe–14Cr–0.3Y2O3 and Fe–14Cr–2W–0.3Ti–0.3Y2O3

Auger

Castro

Monge

et al. 2013

Journal of Nuclear Materials

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Abstract:Two ODS ferritic steels with nominal compositions (wt.%): Fe 14Cr 0.3Y 2 O 3 and Fe 14Cr 2W 0.3Ti 0.3Y 2 O 3 have been produced by mechanical alloying and consolidation by hot isostatic pressing. The microstructure and tensile properties of these materials after being forged and heat treated at 1123 K have been investigated to clarify the interrelation between composition, microstructure and mechanical properties. The second phase precipitates in these alloys have been analyzed by high angle annular dark field imaging in scanning TEM mode and electron diffraction. Fe 14Cr 2W 0.3Ti 0.3Y 2 O 3 exhibits a duplex microstructure consisting of large recrystallized grains, as large as 1.5 lm, and unrecovered regions containing submicron equiaxed grains. In addition, three types of secondary phase particles have been found: large M 23 C 6 particles containing W and Cr, (Cr + Ti) rich spherical particles with diameters between 50 and 500 nm, and fine (Y + Ti) oxide particles with sizes below 30 nm. In contrast, Fe14CrY shows a uniform structure of equiaxed grains, with sizes in the range 0.5 3 lm, containing a fine disper sion of Y oxide particles (<30 nm) homogeneously distributed inside the grains, as well as large carbide and oxide particles. Tensile tests performed over the temperature range 273 973 K have revealed that the alloy containing W and Ti has lower yield and tensile strengths than Fe 14Cr 0.3Y 2 O 3 at tempera tures up to 773 K, but the opposite appears to occur beyond this temperature.

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“…By the reason, the reduce of oxide particle size is important to fabrication of ODS alloys. Hence, the dispersed oxide as Al-Y-O particle inside the metal matrix of 100 nm size or less was considered as the optimum condition for ODS alloy [5].…”

Section: Resultsmentioning

confidence: 99%

Understanding the Oxide Dispersion Behavior of Yttria in Metal Matrix of MA956 Alloy through High-Energy Milling and Hot Press Sintering

Swain

Han

Kim

et al. 2017

Archives of Metallurgy and Materials

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MA956 (Fe-Cr-Al) alloy powder was high-energy ball milled with various amount of yttria contents (1,2,3, and 4 wt.%) to fabricate an oxide dispersion strengthened alloy. The milled powders were then consolidated using hot press sintering at 1150°C. The surface morphology and crystal structure of MA956 powder during the high-energy milling depending on the yttria contents was investigated using particle size analysis, X-ray diffraction, and scanning electron microscopy. The microstructural analysis of sintered alloy was performed using transmission electron microscopy and energy dispersive spectroscopy to evaluate the dispersion behavior of yttrium oxide. The results showed that, as yttria contents increased, the oxide particles became finer and are uniformly distributed during the high-energy milling. However, after the sintering, the oxide particles were coarsened with more than 3 wt.% of yttria addition.

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Oxide dispersion-strengthened steels: A comparison of some commercial and experimental alloys

Cited by 516 publications

References 25 publications

Oxide dispersion-strengthened steel PM2000 after dynamic plastic deformation: nanostructure and annealing behaviour

Oxide dispersion-strengthened steel PM2000 after dynamic plastic deformation: nanostructure and annealing behaviour

Microstructure and tensile properties of oxide dispersion strengthened Fe–14Cr–0.3Y2O3 and Fe–14Cr–2W–0.3Ti–0.3Y2O3

Understanding the Oxide Dispersion Behavior of Yttria in Metal Matrix of MA956 Alloy through High-Energy Milling and Hot Press Sintering

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