Evaluation of microstructural parameters of oxide dispersion strengthened steels from X-ray diffraction profiles

Evaluation of microstructural parameters of oxide dispersion strengthened steels from X-ray diffraction profiles

Bibliografske podrobnosti
Parent link:Journal of Nuclear Materials
Vol. 470.— 2016.— [P. 139–146]
Korporativna značnica: Национальный исследовательский Томский политехнический университет (ТПУ) Институт физики высоких технологий (ИФВТ) Лаборатория № 1
Drugi avtorji: Vlasenko S. Svetlana, Benediktovitch A. I. Andrey Igorevich, Uljyanenkova T. Tatjyana, Uglov V. V. Vladimir Vasilievich, Skuratov V. A. Vladimir Alekseevich, O'Connell J. H. Jacques Herman, Neethling J. H. Johannes Henoch
Izvleček:Title screen
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 s), the strain anisotropy parameter q, the dislocation density r, the dislocation arrangement parameter M, the density of oxide nanoparticles rnp 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).
Режим доступа: по договору с организацией-держателем ресурса
Jezik:angleščina
Izdano: 2016
Teme:
электронный ресурс
труды учёных ТПУ
микроструктуры
стали
дифракция
наночастицы
анизотропия
Online dostop:http://dx.doi.org/10.1016/j.jnucmat.2015.11.047
Format: Elektronski Book Chapter
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=653335

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