Quasi-viscous deformation mode in nonequilibrium nanocrystalline structures

16th International Conference of Students and Young Scientists "Prospects of Fundamental Sciences Development"

自然科学（总论）

Sukhanov, I.I.^1^2 ; Zaytsev, D.S.^2 ; Ditenberg, I.A.^1^2^3 ; Tyumentsev, A.N.^1^2^3

Institute of Strength Physics and Materials Science, SB RAS, Tomsk

634055, Russia^1

National Research Tomsk State University, Tomsk

634050, Russia^2

Siberian Physical-Technical Institute, Tomsk

634050, Russia^3

关键词: Deformation temperatures;    Disclinations;    Interstitial atoms;    Nano-crystalline structures;    Non equilibrium;    Stressed state;    Viscous deformation;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/597/1/012045/pdf
DOI  :  10.1088/1757-899X/597/1/012045

学科分类：自然科学（综合）

来源: IOP

【 摘 要 】

Based on the analysis of the elastic-stressed state of partial disclinations of nanodipoles the rate of the quasi-viscous deformation mode in nanocrystalline structures is estimated. It's shown that velocity of movement of point defects (V) and nanodipole propagation (L) within the quasi-viscous deformation mechanism, depending on the activation energy of the migration of point defects (vacancies, interstitial atoms) and deformation temperature, can reach high values close to the speed of sound in metals.