Abstract:Using Energy disperse spectroscopy, Transmission electron microscopy, Electron backscatter diffraction, electrical conductivity, and mechanical property testing methods, the effects of different cold rolling deformation amounts and aging treatments on the precipitate phases in C18150 alloy were studied. The results show that after different cold rolling deformations and aging treatments, the hardness of the C18150 alloy increased from 141.0 HV to 183.9 HV and 186.5 HV, while the electrical conductivity improved from 49.8% IACS to 77.1% IACS and 82.7% IACS. Electron backscatter diffraction observations show that the grain size on the side surface gradually decreases. After treatment, the deformation texture strength of the sample increased, the proportion of Brass texture increased, and the distribution of geometrically necessary dislocation density became more uniform. The number of precipitated phases increased, appearing as ellipsoidal and elongated rod-like shapes. The average size gradually decreased, and the relationship between the precipitated phases and the matrix gradually transitioned from semi-coherent to coherent.