Abstract
A number of studies describing the coarsening textures of face-centered cubic metals have been reported, but no study have been reported concerning the coarsening phenomena in hexagonal-close packed metals. The coarsening texture produced in high purity zinc sheets cold-rolled to various degrees was investigated. The res lts of experiment are as follows: (1) Basa plane poles of large grains growing in the coarse-grained sheet are closely populated within 20∼30° from the center of the basal plane pole figure. (2) But the beviating direction of this poles is not directional. (3) Coarsening textures in zinc sheets with the {0002}〈11\bar20〉 texture are, in general, related to the main orientation of the matrix by rotation around the [0002] axis, and the range of rotation is approximately 0∼22°, the textures being frequently the same as the {0002}〈11\bar20〉 texture in the matrix. These rotation relationships almost correspond to the case of face-centered cubic metals. (4) Coarsening grains will develope closely connecting with the orientation relationship between neighboring grains shown in primary recrystallization texture, and the produced sharp orientations will depend on the reduction of cold-rolling. (5) Basal plane inclination of neighboring grains is possibly within 10∼30°.
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