Abstract
The conditions under which submicroscopic defects can be revealed due to decoration by the precipitation of vacant lattice sites from a supersaturated solution have been investigated in aluminium. It is shown that quench temperature, specimen purity and other conditions have to be so chosen that the nucleation of self-sinks is minimized while an adequate vacancy supersaturation is maintained. The conditions for the optimum visibility of defects revealed in this way have been studied primarily by observing the variation in the density of rows of dislocation loops along <110> directions. This decoration technique has been used in quenched single crystals deformed in single slip to show that these rows and also narrow faulted dislocation dipoles with their long axes in the <110> direction form along the specific <110> direction predicted from a hypothesis involving the dragging of a jog by a moving screw dislocation.
Reference30 articles.
1. Balluffi R. W. Koehler J . S. & Simmons R. O. 1963 Recovery recrystallization of metals (ed. L. Himmel) p. 1. New Y ork: Interscience.
2. Barnes R. S. & Mazey D. J . 1963 Acta metall. 11 281.
3. Cass T. R. & W ashburn J . 1966 Proc. Br. Ceramic 80c. 6 239.
4. Cottrell A. H . 1953 Dislocations and plastic flow in crystals p. 50. L ondon: Oxford University Press.
5. Elastic self-energies of undissociated dislocation jogs
Cited by
8 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献