Two-phase model of the polycrystalline aggregate with account for grain-boundary states under quasi-static deformation

Abstract

The recently suggested statistical theory of flow stress, including yield strength, for polycrystalline materials under quasi-static plastic deformation is developed in the framework of a two-phase model. Analytic and graphic forms of the generalized Hall-Petch relations are obtained for samples with BCC (α-phase Fe), FCC (Cu, Al, Ni) and HCP (α-Ti, Zr) crystalline lattices at T = 300 K with different values of grain-boundary (second) phase. The maximum of yield strength and respective extremal grain size of the samples are shifted by changing of the second phase. Temperature dependence in the range of 100-350 K for yield strength (using the example of Al) revealed its increase for closely packed nanocrystalline samples with the growth of temperature. An enlargement of the second phase in a sample neutralizes this property.

Original language	English
Title of host publication	Proceedings of the Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures
Editors	Vasily M. Fomin, Victor E. Panin, Sergey G. Psakhie
Publisher	American Institute of Physics Inc.
Volume	2051
ISBN (Electronic)	9780735417779
DOIs	https://doi.org/10.1063/1.5083494
Publication status	Published - 12 Dec 2018
Event	International Symposium on Hierarchical Materials: Development and Applications for New Technologies and Reliable Structures 2018 - Tomsk, Russian Federation Duration: 1 Oct 2018 → 5 Oct 2018

Conference

Conference	International Symposium on Hierarchical Materials: Development and Applications for New Technologies and Reliable Structures 2018
Country	Russian Federation
City	Tomsk
Period	1.10.18 → 5.10.18

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1063/1.5083494

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Reshetnyak, A. A., & Sharkeev, Y. P. (2018). Two-phase model of the polycrystalline aggregate with account for grain-boundary states under quasi-static deformation. In V. M. Fomin, V. E. Panin, & S. G. Psakhie (Eds.), Proceedings of the Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures (Vol. 2051). [020251] American Institute of Physics Inc.. https://doi.org/10.1063/1.5083494

Two-phase model of the polycrystalline aggregate with account for grain-boundary states under quasi-static deformation. / Reshetnyak, A. A.; Sharkeev, Yu P.

Proceedings of the Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures. ed. / Vasily M. Fomin; Victor E. Panin; Sergey G. Psakhie. Vol. 2051 American Institute of Physics Inc., 2018. 020251.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Reshetnyak, AA & Sharkeev, YP 2018, Two-phase model of the polycrystalline aggregate with account for grain-boundary states under quasi-static deformation. in VM Fomin, VE Panin & SG Psakhie (eds), Proceedings of the Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures. vol. 2051, 020251, American Institute of Physics Inc., International Symposium on Hierarchical Materials: Development and Applications for New Technologies and Reliable Structures 2018, Tomsk, Russian Federation, 1.10.18. https://doi.org/10.1063/1.5083494

Reshetnyak AA, Sharkeev YP. Two-phase model of the polycrystalline aggregate with account for grain-boundary states under quasi-static deformation. In Fomin VM, Panin VE, Psakhie SG, editors, Proceedings of the Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures. Vol. 2051. American Institute of Physics Inc. 2018. 020251 https://doi.org/10.1063/1.5083494

Reshetnyak, A. A. ; Sharkeev, Yu P. / Two-phase model of the polycrystalline aggregate with account for grain-boundary states under quasi-static deformation. Proceedings of the Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures. editor / Vasily M. Fomin ; Victor E. Panin ; Sergey G. Psakhie. Vol. 2051 American Institute of Physics Inc., 2018.

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