日本金属学会誌

J. Japan Inst. Metals, Vol. 7, No. 3 (1943),
pp. 120-123

A Study on the Extruded Rods of Aluminium Alloys
The Fifth Report: on the Peculiar Mechanical Properties of Extruded materials

Masahide Kosaki1

1住友金屬工業株式會社伸銅所研究部

Abstract:

The present author has sometimes reported on the peculiar mechanical properties of extruded. Aluminium alloys. From these experiment reported here it is concluded that the pecurialities are mainly caused from the fibre structure of extruded materials. It will be inferred also that this fibre structure, which extruded materials possess, is produced in the stage of hot working among the extruding process, and can not of be distinguished by the solution heat-treatment. If another deformation process, such as forging or rolling, is applied, the recrystallization temperature is lowered, and then the cxcellent properties disappear by the solution heat-treatment.
This inference on the relation between the peculiar properties and the fibre structure is reinforced by the knowledge of the relation between the mechanical properties and the orientation of crystal observed by Karnop.and Sachs.


(Received 1942/10/28)

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