Al単結晶の加工変形におけるX線的研究（その1）⟨111⟩極近傍方位を有する結晶の束状辷りに基く回転軸について

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It has been found that cluster slips, uniform slips with deformation bands, or other slips would be formed by the different orientation of crystals. In the triangle of the stereographic projection, cluster slips are formed in the crystals 〈111〉 and uniform slips near the crystals 〈110〉 in the triangle. Much investigations on the rotation axis of a uniform slip in extended crystals have been reported, but few of them examined the crystals nearest to 〈111〉. In the present report, the rotation axes of cluster slips in the crystals oriented nearest to 〈111〉 were determined by the new X-ray Laue technique. There are two rotation axes in the crystals 〈111〉: the one is 〈121〉 which is normal to the slip direction on the primary slip plane, and the other is 〈111〉 which is normal to the primary slip plane. The rotation of 〈121〉 is responsible for kink bands in the cluster slip region, while the rotation of 〈111〉 seems to be responsible for the screw dislocations.