Effect of Rolling Process on Texture Evolution, Microstructure and Mechanical Properties of TC4 Alloy Plate

The influence of two cold rolling processes of unidirectional rolling and cross rolling on the microstructure, texture and mechanical properties of TC4 alloy plate was studied. The results show that the grains of the two rolling processes are all refined. The microstructure of the unidirectional rolling still has a band structure, and the alpha grains are elongated along rolling direction. The microstructure of the cross rolling is a uniform composition of equiaxed alpha grains and intercrystalline beta. The plasticity of the cross rolling plate is significantly better than that of the unidirectional rolling plate, and the strength is slightly lower than that of the unidirectional cold rolling plate. But the difference between the RD and TD directions of the plate is significantly reduced. The original cold-rolled plate mainly has ((1) over bar2 (1) over bar0) <<(1)over bar>0 (1) over bar0 > pyramid texture with strong intensity. Unidirectional cold rolling inherits the texture components of the original plate. Cross rolling promotes strong basal texture of (0001) to diffuse to the ND-TD surface and RD-TD surface, with a certain angle of deflection, which effectively decreases the pyramid texture intensity, promotes the redistribution of texture components and weakens the anisotropy of the plate.