A new method for the quantitative analysis of the scale and composition of nanosized oxide in 9Cr-ODS steel

Ohnuma, Masato; Suzuki, Jun–ichi; Ohtsuka, Satoshi; Kim, S.-W.; Kaito, Takeji; Inoue, Masakí; Kitazawa, Hideaki

doi:10.1016/j.actamat.2009.07.054

Cited by 134 publications

(81 citation statements)

References 16 publications

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“…For multiphase systems straightforward SAXS is rarely attempted, though some groundwork for such applications has recently been laid [181]. Instead, element-specific techniques such as anomalous SAXS (ASAXS) [192,180] or combinations between SAXS and SANS [129] are used to extract element-specific information.…”

Section: Scattering To Small Anglesmentioning

confidence: 99%

Everything SAXS: small-angle scattering pattern collection and correction

Pauw

2013

J. Phys.: Condens. Matter

169

136

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Section: Scattering To Small Anglesmentioning

confidence: 99%

Everything SAXS: small-angle scattering pattern collection and correction

Pauw

2013

J. Phys.: Condens. Matter

169

136

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“…Individually, these techniques can provide size distributions and volume fractions, allowing for cross-referencing. However, using a method denoted as 'alloy contrast variation' (ACV) 133 the chemical composition of the precipitates present in the sample can also be determined. This is because their volume fraction, size distribution and form are the same for both SAXS and SANS.…”

Section: Precipitates and Clustersmentioning

confidence: 99%

Practical applications of small-angle neutron scattering

Hollamby

2013

Phys. Chem. Chem. Phys.

123

116

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Recent improvements in beam-line accessibility and technology have led to small-angle neutron scattering (SANS) becoming more frequently applied to materials problems. SANS has been used to study the assembly, dispersion, alignment and mixing of nanoscale condensed matter, as well as to characterise the internal structure of organic thin films, porous structures and inclusions within steel.Using time-resolved SANS, growth mechanisms in materials systems and soft matter phase transitions can also be explored. This review is intended for newcomers to SANS as well as experts. Therefore, the basic knowledge required for its use is first summarised. After this introduction, various examples are given of the types of soft and hard matter that have been studied by SANS. The information that can be extracted from the data is highlighted, alongside the methods used to obtain it. In addition to presenting the findings, explanations are provided on how the SANS measurements were optimised, such as the use of contrast variation to highlight specific parts of a structure. Emphasis is placed on the use of complementary techniques to improve data quality (e.g. using other scattering methods) and the accuracy of data analysis (e.g. using microscopy to separately determine shape and size). This is done with a view to providing guidance on how best to design and analyse future SANS measurements on materials not listed below.

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“…3.2 Nano-size oxide particle dispersion 7) With a view to obtaining reliable nano-structure information, the quantitative nano-structure characterization of the 9Cr-ODS steel was carried out by means of small angle neutron and X-ray scattering (SAS) analysis.…”

Section: Idmentioning

confidence: 99%

“…7) One-directional magnetic field of 1T was applied to the specimen for the saturation of magnetization. The scattering intensity of SANS is described as the equation IðqÞ ¼ I nuclear ðqÞ þ ðsin Þ 2 I magnetic ðqÞ.…”

Section: Idmentioning

confidence: 99%

“…The 9Cr-ODS steel bars containing different concentration of titanium (Ti), excess oxygen (Ex.O) and tungsten (W) were produced and the creep rupture tests of these steels were conducted at 973 K. The small angle neutron and X-ray scattering (SAS) analysis results described in the companion paper 7) are used for the quantitative discussion on nano-size oxide particle dispersion of the 9Cr-ODS steels, whileferrite proportion is quantitatively evaluated by dilatometric analysis and cross-sectional W (ferrite-forming element) mapping using EPMA (Electron Probe Micro Analyzer). Both the SAS analysis and dilatometric analysis can offer average microstructural data in bulk material, since their measurement volume ($10 7 mm 3 for SAXS, $10 11 mm 3 for SANS and dilatometric analysis) is much larger than microstructure observation (10 À3 mm 3 for TEM observation).…”

Section: Introductionmentioning

confidence: 99%

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Effect of Nano-Size Oxide Particle Dispersion and δ-Ferrite Proportion on Creep Strength of 9Cr-ODS Steel

et al. 2009

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The effects of chemical compositions on the microstructure and high-temperature creep strength of 9Cr-ODS steel was discussed in the light of quantitative data of -ferrite proportion and nano-size oxide particle dispersion, which were evaluated by dilatometric analysis and small angle neutron/X-ray scattering analysis, respectively. These quantitative data are well consistent with the conventional data obtained by transmission electron microscope. Both data indicate that the important microstructural feature for creep strength improvement of the 9Cr-ODS steel is the number density of nano-size oxide particles, and ferrite/martensite (F/M) duplex structure is favorable for high population nano-size oxide particle dispersion. Both optimization of excess oxygen concentration and control of the F/M duplex structure are promising technique for nano-structure control of 9Cr-ODS steel. Tungsten solid solution strengthening appears to be small compared with oxide dispersion strengthening enhanced by duplex microstructure formation.

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A new method for the quantitative analysis of the scale and composition of nanosized oxide in 9Cr-ODS steel

Cited by 134 publications

References 16 publications

Everything SAXS: small-angle scattering pattern collection and correction

Everything SAXS: small-angle scattering pattern collection and correction

Practical applications of small-angle neutron scattering

Effect of Nano-Size Oxide Particle Dispersion and δ-Ferrite Proportion on Creep Strength of 9Cr-ODS Steel

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A new method for the quantitative analysis of the scale and composition of nanosized oxide in 9Cr-ODS steel

Cited by 134 publications

References 16 publications

Everything SAXS: small-angle scattering pattern collection and correction

Everything SAXS: small-angle scattering pattern collection and correction

Practical applications of small-angle neutron scattering

Effect of Nano-Size Oxide Particle Dispersion and &delta;-Ferrite Proportion on Creep Strength of 9Cr-ODS Steel

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Effect of Nano-Size Oxide Particle Dispersion and δ-Ferrite Proportion on Creep Strength of 9Cr-ODS Steel