Grain boundary sliding and rotational mechanisms of intragranular deformation at different creep stages of high-purity aluminum polycrystals at various temperatures and stresses; Materials Science and Engineering: A; Vol. 733

Grain boundary sliding and rotational mechanisms of intragranular deformation at different creep stages of high-purity aluminum polycrystals at various temperatures and stresses

Bibliographic Details
Parent link:	Materials Science and Engineering: A Vol. 733.— 2018.— [P. 276-284]
Corporate Author:	Национальный исследовательский Томский политехнический университет Инженерная школа новых производственных технологий Отделение материаловедения
Other Authors:	Panin V. E. Viktor Evgenyevich, Surikova N. S. Nataljya Sergeevna, Elsukova T. F. Tamara Filippovna, Vlasov I. V. Ilya Viktorovich, Borisyuk D. V. Darjya Valerjevna
Summary:	Title screen In the paper we show that grain boundary sliding dominates in the creep of A999 aluminum polycrystals and is accommodated by rotation modes of intragranular deformation. Accommodation mechanisms strongly depend on the applied stress σ and creep temperature T. At low σ and T, accommodation occurs by dislocation glide and mesoscale fragmentation. At high σ and T, there appears lattice curvature, which causes the development of shear bands, multiscale fragmentation, and formation of a quasi-neck with nanosized subgrains and plastic microrotations. Noncrystallographic shears in their subboundaries propagate in local lattice curvature zones under τmax by the plastic distortion mechanism. Режим доступа: по договору с организацией-держателем ресурса
Language:	English
Published:	2018
Subjects:	электронный ресурс труды учёных ТПУ creep high-purity aluminum polycrystals grain boundary sliding plasticity methods grains and interfaces fracture поликристаллы алюминий ползучесть пластичность изломы
Online Access:	https://doi.org/10.1016/j.msea.2018.07.038
Format:	Electronic Book Chapter
KOHA link:	https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=661421

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