Nanoscale characterization and formation mechanism of nanoclusters in an ODS steel elaborated by reactive-inspired ball-milling and annealing

Brocq, M.; Radiguet, B.; Poissonnet, S.; Cuvilly, Fabien; Pareige, P.; Legendre, F.

doi:10.1016/j.jnucmat.2010.09.011

Cited by 81 publications

(40 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In order to investigate the kinetic pathway of formation of small nano-clusters enriched with Y, Ti and O, a powder of ODS RAF steel has been prepared by an alternative processing route including reactive ball milling between Fe-Cr-W-Ti powder particles, YFe 3 particles and Fe 2 O 3 particles, followed by annealing [11,12]. Nanoclusters with a size in the range of 1-2 nm were identified in the asmilled powder by means of small angle neutron scatter-ing and atom probe tomography (see Fig.…”

Section: Resultsmentioning

confidence: 99%

Review on the EFDA work programme on nano-structured ODS RAF steels

Baluc

Boutard

Dudarev

et al. 2011

Journal of Nuclear Materials

Self Cite

View full text Add to dashboard Cite

The 2008 work programme of the European research project on nano-structured oxide dispersion strengthened (ODS) reduced activation ferritic (RAF) steels is being organized along the four following programmatic lines: (1) improve the present generation of nanostructured ODS RAF steels; (2) start the industrial fabrication of the present generation of nano-structured ODS RAF steels; (3) develop an optimised generation of nano-structured and nano-grained ODS RAF steels; (4) investigate the stability of present and optimised generation of nano-structured ODS RAF steels under creep and irradiation. This paper presents the main objectives of current R&D activities being performed within the European research project on nano-structured ODS RAF steels, the main obtained results and the main future activ-ities in the case of the four programmatic lines mentioned just above.

show abstract

Section: Resultsmentioning

confidence: 99%

Review on the EFDA work programme on nano-structured ODS RAF steels

Baluc

Boutard

Dudarev

et al. 2011

Journal of Nuclear Materials

Self Cite

View full text Add to dashboard Cite

show abstract

“…On the other hand, some research on ODS manufacturing shows that yttria does not ''dissolve'' during ball milling, rather the effect is a reduction in size to a few nanometres due to fracturing or amorphization of the yttria which takes place at the interfaces of the matrix (Ref 18,30). In many ODS analyses, the size of the oxide clusters was found to be around 1-4 nm after dissolution and precipitation (Ref [31][32][33][34][35]. Even after heat treatment and coarsening of the particles, oxide clusters of size around 10 nm are observed (Ref 35).…”

Section: Discussionmentioning

confidence: 99%

Incorporation of Y2O3 Particles into 410L Stainless Steel by a Powder Metallurgy Route

Zeybek

Barroso

Chong

et al. 2014

J. of Materi Eng and Perform

View full text Add to dashboard Cite

Addition of yttria to steels has been proposed for the fabrication of oxide-dispersion-strengthened materials for nuclear power applications. We have investigated materials prepared from 12 Cr martensitic stainless steel, AISI 410L, produced by powder metallurgy. Materials were produced with and without yttria addition, and two different sizes of yttria were used, 0.9 lm and 50 nm. Tensile and mini-creep tests were performed to determine mechanical properties. Optical microscopy, SEM, TEM, and EDX analysis were used to investigate the microstructures and deformation mechanisms and to obtain information about nonmetallic inclusion particles. SiO 2 , MnS, and Y 2 Si 2 O 7 inclusion particles were observed. An SiO 2 and Y 2 O 3 interaction was seen to have occurred during the ball milling, which impaired the final mechanical properties. Small-angle neutron scattering experiments showed that the matrix chemistry prevented effective dissolution of the yttria.

show abstract

“…However, in technological terms, disadvantages of the MA route include prolonged processing time, small batch size, tendency for contamination associated with the high specific area of the powder, and the high inherent cost of the pre-alloyed feedstock powders, which combine to restrict wider commercial implementation of the MA-based route. [1,[11][12][13][14][15][16] Thus, while key properties of ODS alloys, such as creep and irradiation resistance, are attractive, it is worthwhile to continue to explore alternative fabrication routes to replace/circumvent the MA process that might potentially achieve a higher throughput more suited for industrial production, probably with some, but acceptable, compromises in microstructure and mechanical properties. Recent efforts in this direction include in situ oxidation of a Y-containing melt during gas atomization, oxidation of a gas atomized Y-containing powder, and spray forming of a Y-containing melt.…”

Section: Ferritic Oxide Dispersion-strengthened (Ods)mentioning

confidence: 99%

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

Nanoscale characterization and formation mechanism of nanoclusters in an ODS steel elaborated by reactive-inspired ball-milling and annealing

Cited by 81 publications

References 36 publications

Review on the EFDA work programme on nano-structured ODS RAF steels

Review on the EFDA work programme on nano-structured ODS RAF steels

Incorporation of Y2O3 Particles into 410L Stainless Steel by a Powder Metallurgy Route

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

Contact Info

Product

Resources

About