Orientation and Faulted Structure of [gamma]-Phases in Lanthanum-Alloyed Ni-Al-Cr Superalloy; AIP Conference Proceedings; Vol. 1909 : Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2017 (AMHS’17)

Orientation and Faulted Structure of [gamma]-Phases in Lanthanum-Alloyed Ni-Al-Cr Superalloy; AIP Conference Proceedings; Vol. 1909 : Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2017 (AMHS’17)

Dades bibliogràfiques
Parent link:AIP Conference Proceedings
Vol. 1909 : Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2017 (AMHS’17).— 2017.— [020149, 4 p.]
Autor corporatiu: Национальный исследовательский Томский политехнический университет (ТПУ) Институт международного образования и языковой коммуникации (ИМОЯК) Кафедра междисциплинарная (МД)
Altres autors: Nikonenko E. L. Elena Leonidovna, Shergaeva L. Lyubov, Popova N. Natalya, Koneva N. Nina, Rongshan Qin, Gromov V. Victor, Fedorischeva M. Marina
Sumari:Title screen
The paper presents the transmission and the scanning electron microscope investigations of thin foils of Ni-Al- Сr-based superalloy, which is obtained by the directional crystallization technique. This superalloy contains [gamma]- and [gamma]-phases. Additionally, lanthanum is introduced in the superalloy in 0.015, 0.10 and 0.30 wt % concentrations. The superalloy specimens are then subjected to 1273 K annealing during 10 and 25 h. It is shown that [gamma]-phase is major. In the superalloy, lanthanides La[2]Ni[3] and Al[2]La are detected along with carbide La[2]C[3] particles located on dislocations of the major phase. The amount of phases in the superalloy depends on its thermal treatment and lanthanum concentration. The investigations include the effect of annealing on scalar density of dislocations in [gamma]-phase. It is demonstrated that lanthanum alloying modifies the preferred orientation of [gamma]-phase. Annealing of lanthanum-alloyed superalloy causes the orientation dispersion. In [gamma]-phase, the correlation is observed between the degree of heterogeneity of solid solution and scalar dislocation density. It is shown that this heterogeneity results in the formation of high-density dislocations in [gamma]-phase.
Режим доступа: по договору с организацией-держателем ресурса
Idioma:anglès
Publicat: 2017
Matèries:
электронный ресурс
труды учёных ТПУ
легирование
сплавы
лантан
тонкие пленки
суперсплавы
термическая обработка
дислокации
аморфные металлы
amorphous metals
carbides
heat treatments
Accés en línia:https://doi.org/10.1063/1.5013830
Format: Electrònic Capítol de llibre
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=657160

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