Towards a Theory of Flow Stress in Multimodal Polycrystalline Aggregates. Effects of Dispersion Hardening; AIP Conference Proceedings; Vol. 2167 : Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2019 (AMHS'19)

Towards a Theory of Flow Stress in Multimodal Polycrystalline Aggregates. Effects of Dispersion Hardening; AIP Conference Proceedings; Vol. 2167 : Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2019 (AMHS'19)

Bibliographic Details
Parent link:AIP Conference Proceedings
Vol. 2167 : Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2019 (AMHS'19).— 2019.— [020047, 7 p.]
Main Author: Cevizovic D.
Corporate Author: Национальный исследовательский Томский политехнический университет Исследовательская школа физики высокоэнергетических процессов
Other Authors: Reshetnyak А. А. Aleksandr Aleksandrovich, Sharkeev Yu. P. Yury Petrovich
Summary:Title screen
We elaborate the recently introduced theory of flow stress, including yield strength, in polycrystalline materials under quasi-static plastic deformations, thereby extending the case of single-mode aggregates to multimodal ones in the framework of a two-phase model which is characterized by the presence of crystalline and grain-boundary phases. Both analytic and graphic forms of the generalized Hall–Petch relations are obtained for multimodal samples with BCC ([alpha]-phase Fe), FCC (Cu, Al, Ni) and HCP ([alpha]-Ti, Zr) crystalline lattices at T=300K with different values of the grain-boundary (second) phase. The case of dispersion hardening due to a natural incorporation into the model of a third phase including additional particles of doping materials is considered. The maximum of yield strength and the respective extremal grain size of samples are shifted by changing both the input from different grain modes and the values at the second and third phases. We study the influence of multimodality and dispersion hardening on the temperature-dimensional effect for yield strength within the range of 100–350K.
Режим доступа: по договору с организацией-держателем ресурса
Language:English
Published: 2019
Subjects:
электронный ресурс
труды учёных ТПУ
теория напряжений
поликристаллические агрегаты
пластические деформации
упрочнение
текучесть
композитные материалы
сплавы
Online Access:https://doi.org/10.1063/1.5131914
Format: Electronic Book Chapter
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=661476

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