日本金属学会誌

J. Japan Inst. Metals, Vol. 39, No. 4 (1975),
pp. 339-345

On the Correlation between Torsion Fatigue Strength and Fiber Texture for Aluminium Wire

Naotsugu Inakazu1 and Hisashi Yamamoto1

1College of Engineering, University of Osaka Prefecture, Sakai

Abstract:

In order to find the correlation between the torsion fatigue strength and the process of fiber texture changes in drawn aluminium wire, measurements of fatigue strength were carried out on the wires of various drawing ratios, and the orientation changes during fatigue were investigated by means of X-ray pole figure determination.
It was found that the orientation 112 < 111 > developed by drawing up to a reduction of approximately 72 per cent and the orientation near 110 < 111 > developed by drawing up to approximately 82 per cent were the stable orientations for the torsion fatigue.
The < 111 > single fiber texture developed by drawing up to approximately 93 per cent was accompanied with the stable orientations 110 < 111 > and 112 < 111 > .
It was shown that all the orientations were accompanied with the stable end orientation 110 < 111 > except for the orientations 112 < 111 > and 001 < 100 > .
From a consideration of the torsion fatigue properties, it was concluded that the specimen drawn by a reduction in area up to approximately 82 per cent, had the highest endurance limit.
Therefore, the wire, in which the < 100 > fiber component decreases and the stable end orientation 110 < 111 > is developed during fatigue, is expected to be a better material with torsion fatigue resistivity.


(Received 1974/07/9)

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