Abstract
The microstructural parameters of oxide dispersion strengthened (ODS) steels from measured diffraction profiles were evaluated using an approach where the complex oxide nanoparticles (Y2Ti2O7 and Y4Al2O9) are modeled as spherical inclusions in the steel matrix with coherent or incoherent boundaries. The proposed method enables processing of diffraction data from materials containing spherical inclusions in addition to straight dislocations, and taking into account broadening due to crystallite size and instrumental effects. The parameters of crystallite size distribution modeled by a lognormal distribution function (the parameters m and σ), the strain anisotropy parameter q, the dislocation density ρ, the dislocation arrangement parameter M, the density of oxide nanoparticles ρnp and the nanoparticle radius r0 were determined for the ODS steel samples. The results obtained are in good agreement with the results of transmission electron microscopy (TEM).
| Original language | English |
|---|---|
| Pages (from-to) | 139-146 |
| Number of pages | 8 |
| Journal | Journal of Nuclear Materials |
| Volume | 470 |
| DOIs | |
| Publication status | Published - 1 Mar 2016 |
Fingerprint
ASJC Scopus subject areas
- Nuclear and High Energy Physics
- Materials Science(all)
- Nuclear Energy and Engineering
Cite this
Evaluation of microstructural parameters of oxide dispersion strengthened steels from X-ray diffraction profiles. / Vlasenko, Svetlana; Benediktovitch, Andrei; Ulyanenkova, Tatjana; Uglov, Vladimir; Skuratov, Vladimir; O'Connell, Jacques; Neethling, Johannes.
In: Journal of Nuclear Materials, Vol. 470, 01.03.2016, p. 139-146.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Evaluation of microstructural parameters of oxide dispersion strengthened steels from X-ray diffraction profiles
AU - Vlasenko, Svetlana
AU - Benediktovitch, Andrei
AU - Ulyanenkova, Tatjana
AU - Uglov, Vladimir
AU - Skuratov, Vladimir
AU - O'Connell, Jacques
AU - Neethling, Johannes
PY - 2016/3/1
Y1 - 2016/3/1
N2 - The microstructural parameters of oxide dispersion strengthened (ODS) steels from measured diffraction profiles were evaluated using an approach where the complex oxide nanoparticles (Y2Ti2O7 and Y4Al2O9) are modeled as spherical inclusions in the steel matrix with coherent or incoherent boundaries. The proposed method enables processing of diffraction data from materials containing spherical inclusions in addition to straight dislocations, and taking into account broadening due to crystallite size and instrumental effects. The parameters of crystallite size distribution modeled by a lognormal distribution function (the parameters m and σ), the strain anisotropy parameter q, the dislocation density ρ, the dislocation arrangement parameter M, the density of oxide nanoparticles ρnp and the nanoparticle radius r0 were determined for the ODS steel samples. The results obtained are in good agreement with the results of transmission electron microscopy (TEM).
AB - The microstructural parameters of oxide dispersion strengthened (ODS) steels from measured diffraction profiles were evaluated using an approach where the complex oxide nanoparticles (Y2Ti2O7 and Y4Al2O9) are modeled as spherical inclusions in the steel matrix with coherent or incoherent boundaries. The proposed method enables processing of diffraction data from materials containing spherical inclusions in addition to straight dislocations, and taking into account broadening due to crystallite size and instrumental effects. The parameters of crystallite size distribution modeled by a lognormal distribution function (the parameters m and σ), the strain anisotropy parameter q, the dislocation density ρ, the dislocation arrangement parameter M, the density of oxide nanoparticles ρnp and the nanoparticle radius r0 were determined for the ODS steel samples. The results obtained are in good agreement with the results of transmission electron microscopy (TEM).
UR - http://www.scopus.com/inward/record.url?scp=84952360776&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84952360776&partnerID=8YFLogxK
U2 - 10.1016/j.jnucmat.2015.11.047
DO - 10.1016/j.jnucmat.2015.11.047
M3 - Article
VL - 470
SP - 139
EP - 146
JO - Journal of Nuclear Materials
JF - Journal of Nuclear Materials
SN - 0022-3115
ER -