Materials Transactions Online

Transactions of the Japan Institute of Metals, Vol. 1 No. 2 (1960) pp.77-82
© 1960 The Japan Institute of Metals

On the Texture and Anisotropy of Annealed Al-Cu and Al-Si Alloy Sheets

Toshio Amitani*

Experiments were made to study the resulting anistropy and texture of Al-Cu and Al-Si alloy sheets when the ingots are heat-treated. It was found that when the second phase of metallic compounds were dissolved by quenching and the ingot is in the state of supersaturated solid solution, the annealed sheet made from this ingot had large recrystallization grains and a recrystallization texture composed of type (100) [100] and 90° type ear by deep drawing. On the other hand, as far as the large amount of the second phase of metallic compounds exist in the ingot, the annealed sheet made from this ingot had very small recrystallization grains and a texture composed of type (123) [121] and 45° type ear. Moreover, when the ingot was artificially aged and fine metallic compounds precipitated, the annealed sheet had the eight ears combined 45° type and 90° type ear.
It may be pointed out that, in the process of recrystallization, the change of anisotropy and texture was restricted by the second phase of the metallic cmpounds, at the same time grain growth was also restricted.

(Received October 27, 1960)


* Research Engineer, Sumitomo Light Metal Industries., Ltd.

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