Tensile and creep properties of an oxide dispersion-strengthened ferritic steel

Klueh, R.L.; Maziasz, P.J.; Kim, I.S.; Heatherly, L.; Hoelzer, David T.; Hashimoto, Naoyuki; Kenik, E.A.; Miyahara, Kazuya

doi:10.1016/s0022-3115(02)01046-2

Cited by 218 publications

(118 citation statements)

References 7 publications

Supporting

Mentioning

109

Contrasting

Order By: Relevance

“…The uniform and total elongations for Fe14CrYWTi are higher over the temperature range studied except at 873 K where the elongation temperature curves for Fe14CrY exhibits a pronounced peak that is not observed for Fe14CrYWTi. It should be noted that an analogous peak in the elongation versus temperature has also been reported for the ODS Fe12Y and 12YWT steels, and for an extruded ODS alloy with the same composition than the Fe14CrYWTi alloy [17,18]. Moreover, the hardening ratio defined as the (ultimate tensile stress)/(yield strength) exhibits a very different behavior.…”

Section: Tensile Propertiessupporting

confidence: 57%

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

View full text Add to dashboard Cite

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.

show abstract

Section: Tensile Propertiessupporting

confidence: 57%

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

View full text Add to dashboard Cite

show abstract

“…[29] The additional spots in Figure 1 With encouraging results from melt spinning and internal oxidation of the MS01 ribbons, MS02 ribbons were produced with 15 times higher throughput, reduced Y concentration, and addition of Ti that is known to produce a refining effect of Y-rich oxides in mechanical alloying. [30][31][32] As shown in Figure 2(a), MS02 ribbons had a thickness of approximately 25 lm, which was comparable with the smaller-scale MS01 ribbons. However, there were now resolvable micron-sized equiaxed grains at the wheel side, and again largely featureless columnar grains growing against the 1D heat flow, and then a region of a more obvious microsegregation and dendritic structure towards the free side.…”

Section: Resultsmentioning

confidence: 70%

Development of a Novel Melt Spinning-Based Processing Route for Oxide Dispersion-Strengthened Steels

Hong

Morrison

Zhang

et al. 2017

Metall Mater Trans A

View full text Add to dashboard Cite

Melt spinning of an Fe-5Y and Fe-1Y-1Ti (wt pct) alloy produced a relatively uniform spatial distribution of Y and Ti in solid solution and ribbons with consistent yield (>60 pct by weight), fast processing time (< 10 seconds), good scalability (up to > 100 g feedstock material), and repeatability. Heat treatment in the presence of Fe 2 O 3 as an oxygen source (Rhines pack method) at 973 K validated the potential of forming < 20 nm Y-rich oxides in the Fe-5Y ribbons. Pulverized Fe-1Y-1Y ribbons were consolidated to bulk using the field-assisted sintering technique (FAST) incorporating nano-sized Fe 3 O 4 powder as the oxygen source. After FAST at 1273 K, 50 MPa, and 30 minutes, a comparatively high number density of sub-micron Y and/or Ti-rich oxides were developed. Further formation of fine-scale oxides took place during post-FAST annealing, resulting in an approximate 20 pct increase in hardness at temperatures below 573 K, but with a reduced hardening effect above 673 K due to a small fraction of persistent porosity and mechanically weak prior ribbon boundaries that were decorated with Ti-rich oxides.

show abstract

“…One way suggested to increase this limit, which is obtained through microstructures that contain a high density of small particles of Y2O3 or Ti02 dispersed in a ferritic matrix. Such oxide dispersion strengthened (ODS) steel developed by ORNL is designated 12YWT [2]. This material has an upper temperature limit of 800°C and is compatible with Flibe up to 700°C [3].…”

Section: Structural Materialsmentioning

confidence: 99%

APEX advanced ferritic steel, Flibe self-cooled first wall and blanket design

Wong

Malang²,

Sawan

et al. 2004

Journal of Nuclear Materials

View full text Add to dashboard Cite

APEX Advanced Ferritic Steel, Flibe Self-Cooled First Wall and Blanket Design As an element in the U.S. Advanced Power Extraction (APEX) program, we evaluated the design option of using advanced nanocomposite ferritic steel (AFS) as the structural material and Flibe as the tritium breeder and coolant. We selected the recirculating flow configuration as our reference design. Based on the material properties of AFS, we found that the reference design can handle a maximum surface heat flux of 1 MW/m2, and a maximum neutron wall loading of 5.4 MW/m2, with a gross thermal efficiency of 47%, while meeting all the tritium breeding and structural design requirements. This paper covers the results of the following areas of evaluation: materials selection, first wall and blanket design configuration, materials compatibility, components fabrication, neutronics analysis, thermal hydraulics analysis including MHD effects, structural analysis, molten salt and helium closed cycle power conversion system, and safety and waste disposal of the recirculating coolant design.

show abstract

Tensile and creep properties of an oxide dispersion-strengthened ferritic steel

Cited by 218 publications

References 7 publications

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

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

Development of a Novel Melt Spinning-Based Processing Route for Oxide Dispersion-Strengthened Steels

APEX advanced ferritic steel, Flibe self-cooled first wall and blanket design

Contact Info

Product

Resources

About