Výsledky vyhledávání - "V. I. Protasov"

Possible Amorphisation and Phase Separation of Intermetallic Mo3Si Compound under Radiation. Molecular Dynamics Study

Autor: V. I. Protasov, V. G. Chudinov, N. V. Moseev, B. N. Goshchitskii

Publikováno v: Physica Status Solidi (a). 85:435-440

Defect formation in Mo3Si irradiated with fast neutrons is studied by the molecular dynamics technique. It is shown that within a cascade region of the thermal stage Mo atoms form an amorphous phase, while Si atoms form dendrites. This phenomenon is

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a625a1106ca7fbbbfd0289af0a839655
https://doi.org/10.1002/pssa.2210850213

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Kinetics of heterogeneous nucleation of aligned vacancy type dislocation loops under radiation and stress

Autor: V. G. Chudinov, V. I. Protasov

Publikováno v: Radiation Effects. 83:197-202

By the molecular dynamics technique (MDT) it is shown that in fcc metals vacancy type dislocation loops aligned preferentially with an external stress may occur within cascade regions (CRs) during a thermal spike. The influence of this process on rad

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e5271af7ebddd283c6d6cedf9fea4ed8
https://doi.org/10.1080/00337578408217838

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Evolution of cascade region during the thermal spike

Autor: V. I. Protasov, V. G. Chudinov

Publikováno v: Radiation Effects. 66:1-7

Evolution taking place under irradiation of cascade region (CR) in copper during the thermal spike has been simulated by molecular dynamics technique. It is shown that over time intervals of ∼10−12 s in CR with sufficiently big sizes there is a p

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::950f0e7f5749570014bf15a62ea67d9d
https://doi.org/10.1080/00337578208211468

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Kinetics of Vacancy Mechanism of the Solid-Liquid Transition in F.C.C. Metals

Autor: V. I. Protasov, V. G. Chudinov

Publikováno v: Physica Status Solidi (a). 85:105-112

Results are given on simulation of the phase transition solid-liquid in copper by the molecular dynamics technique (MDT), pressure and volume being constant. A direct evidence for the possibility of vacancy mechanism of melting predicted by Frenkel i

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1ee547dd402c4407e265165a6f3dadb9
https://doi.org/10.1002/pssa.2210850113

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Possible mechanism of void nucleation in FCC metals

Autor: V. I. Protasov, V. G. Chudinov

Publikováno v: Radiation Effects. 81:83-88

Kinetics of a void in fcc metals is simulated by the molecular dynamics technique (MDT). A void is shown to overcome the critical size through a dendrite formed of di-vacancies. The scheme for void nucleation and growth is as follows: mobile vacancy-

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d6b3b577b5c669b2c3b6406e03820761
https://doi.org/10.1080/00337578408206058

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Radiation Diffusion–Dislocation Creep in the Presence of Weertman Mechanism of Dislocation Multiplication

Autor: V. I. Protasov, V. G. Chudinov

Publikováno v: Physica Status Solidi (a). 79:433-443

Radiation-induced creep (RIC) of the f.c.c. and b.c.c. metals is investigated in terms of the dislocation-diffusion approach in a wide range of temperatures considering the changes in the nature of radiation-induced defects. The possibility of simult

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b5b17c178065a5deff47fb55e4dbfa74
https://doi.org/10.1002/pssa.2210790214

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Kinetics of the diffuse processes within cascade region at the subthreshold stages

Autor: V. G. Chudinov, V. I. Protasov

Publikováno v: Radiation Effects. 83:185-196

A collision cascade involving transition and thermal stages is simulated by the molecular dynamics technique (MDT) in copper, the energy of the primary knocked-on atom (PKA) being 5 keV and 1 keV. At these stages an intense diffusion by interstitial

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f77d9406e5a4d24377f164fa0f83f323
https://doi.org/10.1080/00337578408217837

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Simulation of Collision Cascades in Intermetallic V2Hf Compounds

Autor: V. G. Chudinov, V. P. Gocoein, B. N. Goshchitskii, V. I. Protasov

Publikováno v: Physica Status Solidi (a). 79:K57-K60

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2f165cb94d14f34e3c4fe5cd373f42e9
https://doi.org/10.1002/pssa.2210790152

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Simulation of collision cascades in intermetallic Nb3Sn compounds

Autor: V. P. Gocoein, V. I. Protasov, V. G. Chudinov, B. N. Goshchitskii

Publikováno v: Physica Status Solidi (a). 67:61-67

The collision cascade in Nb3Sn compounds is simulated by means of molecular dynamics technique. It is estimated, that focusing collisions propagate along the 〈120〉, 〈100〉, 〈111〉 directions and along the atomic chains of Nb. Formation of �

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f01bc541d5857f2cc68dba572847d601
https://doi.org/10.1002/pssa.2210670103

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Possible mechanism of homogeneous nucleation, growth and annealing of interstitial-type dislocation loops in pure FCC metals

Autor: O. A. Zalukovskaya, V. I. Protasov, V. G. Chudinov

Publikováno v: Radiation Effects. 103:141-147

By the molecular dynamics technique (MDT) it is shown that tri-interstitials with orthogonal orientation of the dumbbell axes are nuclei for interstitial type dislocation loops. These nuclei occur uniformly throughout the whole volume, grow and then

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::42dec480b7cfe4477b619f8bf0572aba
https://doi.org/10.1080/00337578708221248

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