2025 Volume 64 Issue 1 Pages 150-155
Since residual internal stresses in copper and copper alloys affect various mechanical properties, it is important to investigate the microstructures and texture that are factors of internal stresses. In this study, the texture and internal stress (residual stress) of dilute copper–1at% zinc alloy sheets, which were cold rolled down by approximately 80% and subsequently annealed at low temperatures. The texture and internal stress were evaluated by the X–ray diffraction method. The texture measurements showed that the dilute copper alloys exhibited characteristic anisotropy, for example, {211} <111> was observed as the main texture component. Residual stress measurements were performed nondestructively by ion situ applying tensile strains in the rolling direction and in the transverse direction. These results also showed anisotropy in the residual stress. These characteristics are considered important for obtaining information on mechanical properties, because they are caused by the character of dislocations generated during rolling and are considered to depend on process conditions.
