Collective overcoming of point defects by dislocations in the dynamic region

Малашенко, В. В.

doi:10.1134/s1063783414080186

Cited by 9 publications

(1 citation statement)

References 26 publications

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“…Hence, the self-similar character of the metal structure evolution is realized by activating the self-organized processes of various kinds, which arise as a result of the noise inherent to main parameters. It is known that it is the interaction of structural defects with one another and with defects of other structural levels-in our case, this is the interaction of GBs with dislocations, other boundaries, and structural inhomogeneities, such as structural defects of other levels, thermal fluctuations, thermodynamical phases of the substance, impurities, vacancies, and so forth-that leads to the manifestation of internal fluctuations and the changes in grain misorientations in the granular structure of a metal specimen [1,27,29,39,40]. As a result, the emerged boundary structure contains crystallites with a specific structure.…”

Section: Self-similar Fragmentation Modementioning

confidence: 99%

Self-Similar Mode of Metals Fragmentation under Severe Plastic Deformation

Хоменко¹

2019

Ukr. J. Phys.

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In the framework of nonequilibrium evolution thermodynamics, the influence of additive fluctuations on the kinetics of structural defects under severe plastic deformation has been studied. The applied method is a new one for the description of fragmentation modes and corresponding self-organization processes. It is found that a fragmented metallic specimen demonstrates a self-similar behavior, which results in the formation of a grain structure with various grain sizes. Such a behavior takes place provided that the probability distribution for the grain boundary density has a power-law dependence. A comparison of the results obtained in the Itˆo and Stratonovich forms demonstrates the absence of qualitative changes in the behavior of the system.

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Section: Self-similar Fragmentation Modementioning

confidence: 99%