Evolution of Texture of Cu-Ni-Co-Si Alloy During Preparation

Texture evolution of Cu-1.6Ni-1.2Co-0.65Si alloy sheet during the production process was studied by EBSD. The results show that the texture composition of the solid solution sample of the alloy is mainly the Brass texture of the α fiber texture, the Goss texture, the S texture and a small amount of Copper texture. The direct aging treatment after solution does not change the type of texture of sample, but it will significantly reduce the strength of the Brass texture and slightly increase the strength of the Copper texture. As the cold-rolled deformation increases, the Brass texture of the cold-rolled deformed sample will gradually replace other original textures. The texture pole density increases, and the increase in hardness of the alloy by work harden ing is positively correlated with the increase in texture pole density. The texture type remains unchanged at the initial stage of aging at 500 °C, and the overall texture pole density increases slightly as the aging time increases. Extending, the extreme density of th e overall texture gradually decreases, and the texture types tend to be dispersed. During the aging process, the texture density first increases and then decreases, the same as the hardness change rule. With the increases of the aging temperature, the cold-rolled samples recrystallize and the grains grow, the Brass texture tends to disperse, the strength gradually weakens, the recrystallized texture forms and gradually concentrates, and the extreme density strength gradually increases. © 2023 Rare Metals Materials and Engineering Press. All rights reserved.