Instability of Solid Solutions under Irradiation

Platov, Yu. V.; Lazorenko, V.M.; Simakov, S. V.; Tovtin, V. I.; Иванов, В.В.

doi:10.4028/www.scientific.net/msf.97-99.253

Cited by 1 publication

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Within the considered model, the left part of (16) describes the final growth rate of three dimensional complexes before spontaneous diffusionless transition to the initial growth rate of interstitial dislocation loops (the right part of (16)), which equals G in accor dance with (6). Nucleation time τ n exactly equals the start growth time τ g , since the transformation of com plexes into the loops occurs spontaneously.…”

Section: Theoretical Analysis Of Nucleation Of Interstitial Dislocatimentioning

confidence: 99%

“…The second term on the right hand side describes the growth process of dislocation loops. The validity of this mechanism and its parameters were repeatedly confirmed in analyzing the experiments on irradiation of V, Ti, Al, and its solid solutions Al-Zn, Al-Sc, and Al-Mg when irradiated with electrons with energies of 1 and 2.2 MeV at temperatures of 293-343 K [1][2][3][4][5][6][7][8][9]. At the same time, a correct mechanism of the dislocation loop formation which allows deter…”

Section: Introductionmentioning

confidence: 96%

See 1 more Smart Citation

Nucleation of interstitial dislocation loops in metals under electron irradiation

Platov

2014

Inorg. Mater. Appl. Res.

View full text Add to dashboard Cite

A hybrid model of the dislocation loop nucleation in metals during electron irradiation is pro posed. The model is based on the kinetic diffusion mechanism of formation and growth of three dimensional interstitial atomic clusters and the thermodynamic mechanism of intermittent transformation of these clus ters in dislocation loops. The existence of critical input rate G C of freely migrating point defects is established. When G < G C , loops of minimum size consisting of four atoms are formed at the stage of nucleation. With increasing G at G > G C , the number of interstitial atoms increases (n 0 ≥ 4). By analyzing experimental data for the electron irradiated aluminum, it is shown that, using the formulas of the proposed model, one can cal culate all parameters of nucleation of interstitial dislocation loops at a given magnitude of the input rate of freely migrating defects without performing experimental studies.

show abstract

Section: Theoretical Analysis Of Nucleation Of Interstitial Dislocatimentioning

confidence: 99%