The deformed metal of 5A02 aluminum plate has a preferred orientation, and after annealing, due to a certain orientation relationship between nucleation and growth, a preferred orientation, that is, an annealing texture, generally appears. Annealing texture includes recovery texture, recrystallization texture and secondary recrystallization texture.

In practice, it has been found that metals with deformed texture have three possibilities for texture change when annealed:

(1) Consistent with the deformation texture of 5A02 aluminum plate. This situation includes the recovery texture and part of the recrystallized texture;

(2) The annealed texture is completely or partially different from the deformed texture. This is the most common case of recrystallized texture and secondary recrystallized texture.

(3) After annealing, the grains are randomly oriented, that is, the deformation texture of the 5A02 aluminum plate disappears, and the annealing texture does not occur, which is rare.

The recovery process of 5A02 aluminum plate mainly involves the formation and growth of subgrains, so the recovery texture is consistent with the deformation texture. The annealed recrystallized texture is usually different from the deformed texture.