The object of the work was to determine the effect, if any, of pre-existing forest dislocations upon the propagation of basal (0001) cleavage cracks in single crystals of pure zinc. The effective surface energy for cleavage γe was measured as a function of the density of dislocations which intersected the plane of fracture. The value of γe was found to decrease as the dislocation density increased.
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References
1.
HULLD., BEARDMOREP., and VALINTINEA. P.: Philos. Mag., 1965, 12, 1021.
