The temperature changes at the rim, 1/2 radius, and bore of the turbine disk during the solution treatment were measured. Based on the measured temperature data, solution treatment experiments with different cooling rates (14, 51, and 93 °C/min) were performed, and the solution temperatures were 1120 and 1080 °C. At all three cooling rates, the multimodal size distribution of γ′ precipitates was detected, and the size of γ′ precipitates is inversely related to the cooling rate. Only the secondary and tertiary γ′ precipitates were found at a solution temperature of 1120 °C, and the secondary γ′ precipitates progressed from spherical (93 and 51 °C/min) to flower-like (14 °C/min) shape, with the flower-like γ′ precipitates regulated by aggregation. At a solution temperature of 1080 °C, the γ′ precipitates evolve from cuboids (93 and 51 °C/min) to irregular shapes (14 °C/min). Irregular γ′ precipitates are affected by the lattice mismatch between the matrix and the γ′ precipitates.

测量了固溶处理过程中涡轮盘轮缘、1/2半径和内径处的温度变化。根据测得的温度数据，进行了不同冷却速率（14、51和93°C/min）的固溶处理实验，固溶温度分别为1120和1080°C。在所有三种冷却速率下，均检测到γ′析出物的多峰尺寸分布，并且γ′析出物的尺寸与冷却速率成反比。在溶液温度为 1120 ℃时，仅发现二级和三级 γ′ 析出物，并且次级 γ′ 析出物从球形（93 和 51 ℃/min）发展为花状（14 ℃/min）形状，具有受聚集调节的花状γ'沉淀物。在 1080 °C 的溶液温度下，γ′ 沉淀物从长方体（93 和 51 °C/min）演变为不规则形状（14 °C/min）。不规则的γ′析出物受到基体和γ′析出物之间晶格失配的影响。