日本金属学会誌

J. Japan Inst. Metals, Vol. 21, No. 5 (1957),
pp. 309-312

A Study on the Extrusion of Aluminium Alloys (4th Report). On the Structure of Extruded Product

Hiroshi Asada and Kichizo Koike


Abstract:

The successive structural changes along the extruded length and the transverse directions of the extruded product are caused by several factors such as, the temperature of extrusion, the deformation ratio, the speed of extrusion, the condition of lubrication concerned with the shape of the die and Mn or Cr content. It is clear that such structural behaviors originate from the factors of cold-working during the hot-working, and these relations coincide with the relation between the recrystallization temperature and the extrusion conditions that have been pointed out in the 3rd report. Consequently, in the process of extrusion of aluminium alloy, some effects of the cold-working factors are unvoidable. Then, the structure of extruded product is sensitively affected by the distribution and the amount of residual stratin.


(Received 1956/10/26)

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