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 | |
| 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 |
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ASJC Scopus subject areas
- Physics and Astronomy(all)
Cite this
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
}
TY - GEN
T1 - Two-phase model of the polycrystalline aggregate with account for grain-boundary states under quasi-static deformation
AU - Reshetnyak, A. A.
AU - Sharkeev, Yu P.
PY - 2018/12/12
Y1 - 2018/12/12
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85059037026&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85059037026&partnerID=8YFLogxK
U2 - 10.1063/1.5083494
DO - 10.1063/1.5083494
M3 - Conference contribution
VL - 2051
BT - Proceedings of the Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures
A2 - Fomin, Vasily M.
A2 - Panin, Victor E.
A2 - Psakhie, Sergey G.
PB - American Institute of Physics Inc.
ER -