The textures of Zircaloy-4 plate rolled at 940°C were investigated by means of texture orientation factor, inverse pole figure and pole figure. The results indicated that different type textures were developed in different layers along the thickness of the specimen. The texture of basal poles mainly oriented in the normal direction (ND) in the surface layer evolved into one of that mainly oriented in the transverse direction (TD) in the central layer. Very strong (1 2 10)[10 1 0] texture was developed in the central layer and f_t of this layer was greater than 0.45. Optical microscopy (OM) and transmission electron microscopy (TEM) revealed the distribution of temperature gradient along the thickness of the specimen during rolling gave rise to the orientation variation of basal poles in different layers. Stress-induced martensitic transformation occurred in the central layer because of the proper high temperature and favourable rolling stress and it brought about very strong (1 2 10)[10 1 0] texture formed as well as f_t increased in this layer.
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