The elastic interaction between a symmetric point defect and a disk cluster in anisotropic cubic crystals: guinier-preston zones in beryllium copper
✍ Scribed by D.J Mllar; George Sines; J.W Goodman
- Publisher
- Elsevier Science
- Year
- 1975
- Weight
- 1018 KB
- Volume
- 23
- Category
- Article
- ISSN
- 0001-6160
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✦ Synopsis
The elastic interaction between a disk with a thickness misfit on the (100) plane and a symmetric point defect in a cubic anisotropic crystal is calculated and energy contours for beryllium in copper are presented. The interaction field consists of two polar regions and an equatorial region separated by a potential barrier which contrasts with the unseparated field for isotropio or hexagonal crystals. The morphology of Gunner-Preston zones and their growth rates are discussed wit,h respect to the effect of the interaction on solute atoms and vacancies. For beryllium in copper, the interaction favors the fo~ation of stacked G.P. zones which recently have been reported.