Abstract
The recrystallization behavior of a drawn aluminium alloy accompanied by precipitation has been investigated by means of measurements of mechanical and electrical properties, determination of X-ray pole figure and ODF, and transmission electron microscopy.A duplex fiber texture composed of a strong 〈111〉 axial component and a weak 〈100〉 one is formed by the drawing to 90% reduction in area. In the case of high annealing temperature (>673 K), the precipitation occurs after recrystallization, therefore, the recrystallization texture is accompanied with a 〈100〉 axis component. In the case of middle annealing temperature (∼643 K), the recrystallization and the precipitation behaviors compete mutually, and the “in situ” recrystallization occurs because of the pinning of a migrating sub-grain boundary by fine precipitates, and consequently the 〈111〉 axis component remains in the matrix. In the case of low annealing temperature (603 K), firstly precipitates will grow and coalesce, thereafter the recrystallization occurs, because the pinning effect by fine precipitates decreases, and consequently the recrystallization texture is composed of the random components. In the case of long time annealing, the secondary recrystallization occurs, and consequently the 〈112〉 axis component is developed.
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