日本金属学会誌

J. Japan Inst. Metals, Vol. 40, No. 12 (1976),
pp. 1298-1303

A Study on the Cold Rolled Texture of a 3%Si-Fe(001)[100] Single Crystal

Toshiya Wada1, Katsuro Kuroki1 and Toshihiko Takata1

1Process Technology R & D Center, Nippon Steel Co., Ltd.,

Abstract:

The cold rolled texture of 3%Si-Fe(001)[100] is composed mainly of (001) < hkl > which is formed as a result of rotation of original (001)[100] about the rolling plane normal. However, many minor components of which (001) were not parallel to the rolling plane were reported to exist.
These minor components were investigated in this study using an (001)[110] single crystal and bi- and tri-crystals composed of (001)[110] and near (001)[110].
The main results were as follows:
Minor components of which (001) were not parallel to the rolling plane existed evenly throughout the specimen after 70% cold reduction where deformation bands and transition bands were clearly formed. With increased reduction, the amount of minor components increased, and their mean angle of (001) from the rolling plane were 18 degrees at 70%, and 25 degrees at 90%. The regions where degree of tilting of (001) was large corresponded to the point where either deformation band disappeared or transition band were fouled. The direction of rotation was adverse each other in both sides of a transition band, and the rotation axis was < 110 > .
After cold rolling the (001)[110] bi- and tri-crystals to 80% reduction, a quite similar phenomenon to the single crystal mentioned above was observed; tilting of (001) from the rolling plane, 10∼20 degrees, was observed along the grain boundaries.
The rotation axis was < 110 > and the directions of rotation were adverse each other in both sides of the grain boundary.
From these facts it was concluded that minor components of which (001) were not parallel to the rolling plane in rolled (001)[100] single crystals were caused by a constraining effect of the transition bands during rolling as grain boundary does in polycrystals.


(Received 1976/05/24)

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