Aggregatization of Frenckel defects in Ni and intermetallide Ni3Al

被引：2

作者：

Starostenkov, Mikhail ^{[1
]}

Medvedev, Nikolay ^{[2
]}

Pozhidaeva, Olga ^{[1
]}

机构：

[1] Altay State Tech Univ, Lenin Str 46, Barnaul 656038, Russia

[2] Biysk Pedag State Univ, Biisk 659333, Russia

来源：

MATERIALS STRUCTURE & MICROMECHANICS OF FRACTURE V | 2008年 / 567-568卷

关键词：

atom; diffusion; interstitial atom; aggregate; point defect; interaction; fracture;

D O I：

10.4028/www.scientific.net/MSF.567-568.165

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The formation of Frenckel pairs - vacancies and interstitial atoms takes place during external high energetical influence. The accumulation and aggregatization of point defects is noticed only at definite conditions. Vacancies form volume vacancy tetrahedrons and interstitial atoms form segregations. The conditions of the formation of point defects complexes on the basis of Frenckel pairs were studied by the methods of molecular dynamics in the dependence on temperature and intensity of external influence. Their possible role in the process of deformation and fracture of materials under study were evaluated. Comparison analysis of their stability was made for clusters of interstitial atoms. When the cluster had about 130 interstitial atoms, crowdion complexes were energetically profitable.

引用

页码：165 / +

页数：2

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