By giving cold-working and annealing successively to aluminium single crystals made from the melt, the changes in Laue spots were observed by the ordinary and microfocussing X-rays. It was found that with the repetition of working and annealing the fine structure of the Laue spots from the operative slip plane grew complicated, depending on the temperature of annealing. In the case of low temperature annealing, the lamellar structure of the spot remained stable, while in the case of high temperature annealing it changed into an irregular, complicated structure incapable of being resolved with the present apparatus.
Science reports of the Research Institutes, Tohoku University. Ser. A, Physics, chemistry and metallurgy 6 244-252, 1954