X-Ray Study of Cold-Worked Metal Single Crystals

概要

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The change in the reflected intensity of X-ray due to the deformation of metal single crystals of aluminium and zinc was examined with microphotometer by using Cu-K_α radiation. In aluminium single crystals, a large change in the relative intensity of {111}-reflections was observed with an increase of the deformation, and almost saturated at a few per cent elongation. The increasing rate of the relative intensity reflected from the active slip plane was larger than that from the latent slip planes. Similar results were obtained with zinc single crystals. The increase in the integrated intensity was explained as caused by the reduction in the extinction due to the fragmentation of crystallite blocks, from which it was concluded that the distortion after slip deformation was larger in the active slip plane than in the latent slip planes. In other words, the strain-hardening is larger in the active slip plane than in the latent slip planes. Further, the recovery of the relative intensities was examined, and it was seen that in aluminium crystal it was incomplete even after long-time annealing at high temperature, whereas in zinc crystal it was almost perfect at short-time annealing.
東北大学の論文