Towards a theory of flow stress in multimodal polycrystalline aggregates. Effects of dispersion hardening
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Конференцијски прилог (Објављена верзија)
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© 2019, The Author(s)
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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 (α-phase Fe), FCC (Cu, Al, Ni) and HCP (α-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. © 2019 Author(s).
Извор:
AIP Conference Proceedings, 2019, 2167, 020047-Финансирање / пројекти:
- Program of Fundamental Research under the Russian Academy of Sciences
Напомена:
- Conference of International Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2019 ; 1-5 October 2019; Conference Code:154641
DOI: 10.1063/1.5131914
ISBN: 9780735419124
ISSN: 0094-243X
WoS: 000521750000047
Scopus: 2-s2.0-85075803105
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VinčaTY - CONF AU - Čevizović, Dalibor AU - Reshetnyak, Alexander A. AU - Sharkeev, Yurii P. PY - 2019 UR - https://vinar.vin.bg.ac.rs/handle/123456789/8664 AB - 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 (α-phase Fe), FCC (Cu, Al, Ni) and HCP (α-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. © 2019 Author(s). C3 - AIP Conference Proceedings T1 - Towards a theory of flow stress in multimodal polycrystalline aggregates. Effects of dispersion hardening VL - 2167 SP - 020047 DO - 10.1063/1.5131914 ER -
@conference{ author = "Čevizović, Dalibor and Reshetnyak, Alexander A. and Sharkeev, Yurii P.", year = "2019", abstract = "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 (α-phase Fe), FCC (Cu, Al, Ni) and HCP (α-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. © 2019 Author(s).", journal = "AIP Conference Proceedings", title = "Towards a theory of flow stress in multimodal polycrystalline aggregates. Effects of dispersion hardening", volume = "2167", pages = "020047", doi = "10.1063/1.5131914" }
Čevizović, D., Reshetnyak, A. A.,& Sharkeev, Y. P.. (2019). Towards a theory of flow stress in multimodal polycrystalline aggregates. Effects of dispersion hardening. in AIP Conference Proceedings, 2167, 020047. https://doi.org/10.1063/1.5131914
Čevizović D, Reshetnyak AA, Sharkeev YP. Towards a theory of flow stress in multimodal polycrystalline aggregates. Effects of dispersion hardening. in AIP Conference Proceedings. 2019;2167:020047. doi:10.1063/1.5131914 .
Čevizović, Dalibor, Reshetnyak, Alexander A., Sharkeev, Yurii P., "Towards a theory of flow stress in multimodal polycrystalline aggregates. Effects of dispersion hardening" in AIP Conference Proceedings, 2167 (2019):020047, https://doi.org/10.1063/1.5131914 . .