Three types of dislocation core structure in B2 alloys

被引：7

作者：

Paidar, Vaclav ^{[1
]}

Cak, Miroslav ^{[2
]}

机构：

[1] Acad Sci Czech Republic, Inst Phys, Slovance 2, CZ-18221 Prague 8, Czech Republic

[2] Ruhr Univ Bochum, ICAMS, Atomist Modelling & Simulat, D-44801 Bochum, Germany

来源：

INTERMETALLICS | 2016年 / 73卷

关键词：

Intermetallics; Mechanical properties; Planar faults; ab-initio calculations; TOTAL-ENERGY CALCULATIONS; WAVE BASIS-SET; INTERMETALLIC COMPOUND; MECHANICAL-PROPERTIES; SHEAR FAULTS; YAG; SIMULATIONS; METALS; MOTION; YCU;

D O I：

10.1016/j.intermet.2016.02.007

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The mechanical properties are directly influenced by the properties of dislocation. In the relatively simple ordered structure of B2 type, the dislocation core structure is controlled by the stacking-fault-like defects as antiphase boundaries. It will be shown, that three types of B2 alloys can be distinguished differing by the degeneracy of antiphase-boundary-like defects energies on the {110} plane: crystallographic, two- and four-fold degenerated antiphase boundary energies. Various types of superlattice dislocation and their impact on dislocation mobility is discussed in this paper. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：21 / 25

页数：5

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