The Formation of Off-Cube Texture in the Aluminum Single Crystal Rolled in the (014)[100] Orientation

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  • Murakami Takeshi
    Department of Metallurgical Engineering, Faculty of Engineering, Tokyo Institute of Technology
  • Takahashi Tsuneo
    Department of Metallurgical Engineering, Faculty of Engineering, Tokyo Institute of Technology

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  • (014)〔100〕アルミニウム単結晶におけるoff-cube textureの生成について
  • 014 100 アルミニウムタンケッショウ ニ オケル off-cube texture ノ セイセイ ニ ツイテ

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The orientation changes in the high-purity aluminum single crystal rolled in the (014)[100] orientation were studied by X-ray methods.<BR>During the rolling, three layers having different orientations were found to exist parallel to the rolling plane. In the central layer of the specimen, the lattice tended to rotate toward the (011)[100] orientation, while in the surface layer, it tended to rotate toward the {259}⟨211⟩. A transition layer existing between these two layers did not change its orientation and retained the initial orientation up to 81% reduction, the existence of this transition layer with its unchanged orientation was confirmed by the X-ray measurement. However, at reductions higher than 90%, the formation of recrystallized off-cube grains was found to occur in this layer at room temperature. These grains had the orientation similar to the initial one. The formation of the off-cube texture was consequently, attributed to the mechanism of “oriented nucleation”.

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