Effect of nanoscale defects on inelastic processes in aged alloys
V.V. Malashenko1, T.I. Malashenko2
1 Donetsk Institute for Physics and Engineering named after A.A. Galkin
2 Donetsk National Technical University
DOI: 10.26456/pcascnn/2023.15.754
Short communication
Abstract: The high strain rate deformation of an aged alloy with a high concentration of GuinierPreston zones is theoretically analyzed. The analysis was carried out within the framework of the theory of dynamic interaction of defects. An analytical expression for the dependence of the dynamic yield strength on the concentration of impurity atoms has been obtained. The reasons of the different influence of Guinier-Preston zones on inelastic processes at different strain rates are analyzed. It is shown that under high strain rate deformation, nanosized defects affect the nature of the dependence of the dynamic yield stress on the concentration of impurity atoms. This dependence becomes nonmonotonic and has a minimum and a maximum. The maximum corresponds to the transition from the dominant influence of the collective interaction of dislocations on the spectral gap to the dominance of the influence of the collective interaction of impurity atoms. The minimum corresponds to the transition from dominance of dislocation drag by Guinier-Preston zones to dominance of drag by impurity atoms. Numerical estimates of the contribution of the Guinier-Preston zones to the yield strength are made. It is shown that at a high concentration of Guinier-Preston zones, this contribution is very significant. Numerical estimates are made of the concentration of impurity atoms, at which the concentration dependence has a maximum and a minimum.
Keywords: high strain rate deformation, dislocations, Guinier-Preston zones, point defects, nanomaterials
- Vadim V. Malashenko – Dr. Sc., Professor, Chief Researcher of the Department «Theory of kinetic and electronic properties of nonlinear systems», Donetsk Institute for Physics and Engineering named after A.A. Galkin
- Tatyana I. Malashenko – Senior Lecturer, Department of Physics, Donetsk National Technical University
Reference:
Malashenko, V.V. Effect of nanoscale defects on inelastic processes in aged alloys / V.V. Malashenko, T.I. Malashenko // Physical and chemical aspects of the study of clusters, nanostructures and nanomaterials. — 2023. — I. 15. — P. 754-759. DOI: 10.26456/pcascnn/2023.15.754. (In Russian).
Full article (in Russian): download PDF file
References:
1. Li P., Susmel L., Ma M. The life prediction of notched aluminum alloy specimens after laser shock peening by TCD, International Journal of Fatigue, 2023, vol. 176, art. no. 107795, DOI: 10.1016/j.ijfatigue.2023.107795.
2. Batani D. Matter in extreme conditions produced by lasers, Europhysics Letters, 2016, vol. 114, no. 6, pp. 65001-p1-650001-p7. DOI: 10.1209/0295-5075/114/65001.
3. Lee J.H., Veysset D., Singer J.P. et al. High strain rate deformation of layered nanocomposites, Nature Communications, 2012, vol. 3, art. no. 1164, 9 p. DOI: 10.1038/ncomms2166.
4. Smith R.F., Eggert J.H., Rudd R.E. et al. High strain-rate plastic flow in Al and Fe, Journal of Applied Physics, 2011, vol. 110, issue 12, pp. 123515-1-123515-11. DOI: 10.1063/1.3670001.
5. Kanel G.I., Savinykh A.S., Garkushin G.V., Razorenov S.V. Effects of temperature and strain on the resistance to high-rate deformation of copper in shock waves, Journal of Applied Physics, 2020, vol. 128, issue 11, pp. 115901-1-115901-8 . DOI: 10.1063/5.0021212.
6. Yanilkin A.V., Krasnikov V.S., Kuksin A.Yu., Mayer A.E. Dynamics and kinetics of dislocations in Al and Al-Cu alloy under dynamic loading, International Journal of Plasticity, 2014, vol. 55, pp. 94-107. DOI: 10.1016/j.ijplas.2013.09.008.
7. Malashenko V.V., Malashenko T.I. Vliyanie nanorazmernykh defektov na dinamicheskij predel tekuchesti splavov [The effect of nanoscale defects on the dynamic yield stress of alloys], Fiziko-khimicheskie aspekty izucheniya klasterov, nanostruktur i nanomaterialov [Physical and chemical aspects of the study of clusters, nanostructures and nanomaterials], 2020, issue 12, pp. 136-141. DOI: 10.26456/pcascnn/2020.12.136. (In Russian).
8. Malashenko V.V. Osobennosti vysokoskorostnoy deformatsii sostarennykh splavov [Peculiarities of high strain rate deformation of aged alloys], Fizika tverdogo tela [Physics of the solid state], 2023, vol. 65, issue 8, pp. 1375-1378. DOI:10.21883/FTT.2023.08.56156.70. (In Russian).
9. Malashenko V.V. Vliyanie vodoroda na mekhanicheskie svoystva metallov v usloviyakh vysokoskorostnoy deformatsii [The effect of hydrogen on the mechanical properties of metals under high strain rate deformation], Fizika tverdogo tela [Physics of the Solid State], 2022, vol. 64, issue 11, pp. 1804-1806. DOI: 10.21883/FTT.2022.11.53337.416. (In Russian).
10. Malashenko V.V. Dynamic drag of dislocation by point defects in near-surface crystal layer, Modern Physics Letters B, 2009, vol. 23, issue 16, pp. 2041-2047. DOI: 10.1142/S0217984909020199.
11. Malashenko V.V. Dynamic drag of edge dislocation by circular prismatic loops and point defects, Physica B: Condensed Matter, 2009, vol. 404, issue 21, pp. 3890-3893. DOI: 10.1016/j.physb.2009.07.122.
12. Morris D.G., Muñoz-MorrisM.A., Requejo L.M. Work hardening in Fe–Al alloys, Materials Science and Engineering: A, 2007, vol. 460-461, pp. 163-173. DOI:10.1016/j.msea.2007.01.014.