SUPER-LATTICE DISLOCATIONS IN CU2NIZN

被引:12
作者
DEGROOT, J
BRONSVELD, PM
DEHOSSON, JTM
机构
[1] Materials Science Centre, University of Groningen
来源
PHYSICA STATUS SOLIDI A-APPLIED RESEARCH | 1979年 / 52卷 / 02期
关键词
D O I
10.1002/pssa.2210520234
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The separations between the partials of superlattice dislocations in Cu2NiZn are calculated by anisotropic elasticity theory as a function of the ordering taking into account nearest‐ and next‐nearest‐neighbour interactions. The values for the antiphase boundary energies are obtained using the effective interatomic potentials of the transition metals which are computed within the framework of the pseudopotential approximation based on a transition‐metal model potential of the Heine‐Abarenkov‐Shaw type. The results indicate that the separations strongly depend on the degree of ordering, on intertomic potentials, and on the anisotropy of Cu2NiZn. The theoretical results presented appear to be in reasonable agreement with experimental values for the distances between two unit edge dislocations in Cu2NiZn. Copyright © 1979 WILEY‐VCH Verlag GmbH & Co. KGaA
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页码:635 / 645
页数:11
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