MODEL OF VOID FORMATION ON WEDGE DISCLINATION
- Authors: Perevezentsev V.N.1, Kirikov S.V.1, Pupynin A.S.1
- 
							Affiliations: 
							- Federal Research Center Institute of Applied Physics, Russian Academy of Sciences
 
- Issue: Vol 126, No 6 (2025)
- Pages: 737-744
- Section: ПРОЧНОСТЬ И ПЛАСТИЧНОСТЬ
- URL: https://ruspoj.com/0015-3230/article/view/692734
- DOI: https://doi.org/10.31857/S0015323025060126
- ID: 692734
Cite item
Abstract
A model of voids formation during plastic deformation is proposed, based on the concept of crack formation in the field of elastic stresses of a negative disclination and its subsequent blunting due to accommodative plastic deformation. A detailed analysis of the main characteristics of a disclination crack is carried out. Analytical expressions are obtained for the stress intensity factors at its tips, the distribution of the Burgers vector density and the profile of its opening depending on the material parameters and disclination characteristics. The stability conditions of a symmetric microcrack with a disclination located in its center are investigated. For this configuration of defects, the dependence of the value of plastic crack opening on the disclination strength, the elastic field screening radius and the mechanical constants of the material is obtained.
Keywords
About the authors
Vladimir Nikolaevich Perevezentsev
Federal Research Center Institute of Applied Physics, Russian Academy of Sciences
							Author for correspondence.
							Email: v.n.perevezentsev@gmail.com
				                					                	SPIN-code: 1488-1589
																		                								
Doctor of Science, professor, Head of the Laboratory of Physical Materials Science No. 4021
Russian Federation, Nizhny Novgorod, 603024 RussiaSergey Vladimirovich Kirikov
Federal Research Center Institute of Applied Physics, Russian Academy of Sciences
														Email: ksv.kirikov@yandex.ru
				                					                	SPIN-code: 9347-3651
																		                								
PhD, senior researcher, Laboratory of Physical Materials Science No. 4021
Russian Federation, Nizhny Novgorod, 603024 RussiaAleksandr Sergeevich Pupynin
Federal Research Center Institute of Applied Physics, Russian Academy of Sciences
														Email: pupynin.as@gmail.com
				                	ORCID iD: 0000-0002-6464-3422
				                	SPIN-code: 6796-6293
																		                								
PhD, senior researcher, Laboratory of Physical Materials Science No. 4021
Russian Federation, Nizhny Novgorod, 603024 RussiaReferences
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