アルミニウム板の焼鈍条件と異方性および聚合組織の関係について

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  • On the Texture and the Change in the Anistropy of Aluminium Sheets by the Various Annealing Conditions
  • アルミニウムバン ノ ショウドン ジョウケン ト イホウセイ オヨビ シュウゴウソシキ ノ カンケイ ニ ツイテ

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When rolled aluminium sheets of different purities were annealed at various temperature and time, the following results were obtained from the investigation of the relations among the recrystallized grain size, the change in the texture and the anisotropy. (1) Immediatly after the specimens have recrystallized, the texture of the small recrystallized grains of annealed high-purity aluminium contains most of the component of the (123)[1\bar21] rolling texture, so that earing appears at 45° to the rolling direction by deep drawing. When the recrystallized grains grow as the annealing proceeds, the second orientation (100)[001] develops and earings change from 45° to 90° with respect to the rolling direction. (2) In the case of commercial-purity aluminium, the impurity atoms restrict the growth of the recrystallized grains, so that the grains do not grow as the result of successive annealing, and, there is no change in the anisotropy. The most effective impurity element was iron (the content of iron should be more than 0.3 per cent), but silicon included as impurity had no effect on the growth of grains and the change in anisotropy. It may be inferred from the above results that when a small quantity of metalic elements is added to restrict the growth of recrystallized grains, the the texture and the anisotropy do not change.

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  • 日本金属学会誌

    日本金属学会誌 24 (12), 769-773, 1960

    公益社団法人 日本金属学会

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