-27 m3/s增加到900 ℃時(shí)的9.56×10-27 m3/s。γ′相的活化能主要受W元素在γ基體中的擴(kuò)散影響，其活化能為210 kJ/mol。所制備的Co-Ni-Al-W合金表現(xiàn)出優(yōu)異的綜合性能，特別是具有高γ?相溶解溫度（1221 ℃）和低密度（8.7 g/cm3）的良好結(jié)合。此外，Co-Ni-Al-W合金在常溫和高溫下的壓縮屈服強(qiáng)度均高于其他γ?強(qiáng)化的Co基高溫合金，且該合金在850 ℃下的壓縮屈服強(qiáng)度高達(dá)774 MPa。;The coarsening behavior of γ? precipitate phase at different temperatures and the compressive performance of novel Co-Ni-Al-W superalloy were investigated. Experiment results show that the evolution of the mean radius and volume fraction of the γ? phase obeys the classical Lifshitz-Slyozov-Wagner model. The coarsening rate of the γ? phase exhibits a significant dependence on the aging temperature, which increases from 1.30×10-27 m3/s at 800 °C to 9.56×10-27 m3/s at 900 °C. The activation energy of γ? phase is mainly influenced by the W diffusion in the γ matrix, presenting as 210 kJ/mol. The prepared Co-Ni-Al-W alloy possesses superb comprehensive properties, particularly the good combination of high γ? solvus temperature (1221 °C) and low density (8.7 g/cm3). Besides, the compressive yield strength of the Co-Ni-Al-W alloy at ambient and high temperatures are higher than that of other γ?-strengthened Co-based superalloys. The compressive yield strength of the Co-Ni-Al-W alloy at 850 °C is as high as 774 MPa."/>