Abstract
In the previous studies on the secondary recrystallization of straight rolled Al single crystal, it was found that the specimen in which the coarsening phenomenon was observed had always a fine grained structure with a high percentage of primaries in one preferred orientation. In the present study, using cross rolled Al single crystals(99.996% purity) the author investigated the change of the structure during the rolling and annealing process by etch pit method. Comparing the results with those of straight rolling, the author found that the orientation change was smaller, the primary texture was not in one preferred orientation and the coarsening of grain was not observed after 600°×2 hr annealing even in(111)orientation specimen. From the above results, the author considers that the fiber texture in one preferred orientation made by rolling and annealing plays an important role for the coarsening phenomenon of the single crystal.
