2099合金热变形过程中的动态软化机制*

张飞, 沈健, 闫晓东, 孙建林, 蒋呐, 周华

DYNAMIC SOFTENING MECHANISM OF 2099 ALLOY DURING HOT DEFORMATION PROCESS

ZHANG Fei, SHEN Jian, YAN Xiaodong, SUN Jianlin, JIANG Na, ZHOU Hua

表1 2099合金的热激活参数

Table 1 Thermal activation parameters of 2099 alloy

T / ℃ Q / (K·mol-1) V / (10-30 m3) and lnZ parameter 0.001 s-1 0.01 s-1 0.1 s-1 1 s-1 10 s-1 300 147.8 57.7 / 35.5 83.3 / 37.8 79.9 / 40.1 38.0 / 42.4 20.5 / 44.7 340 163.6 91.0 / 32.8 93.0 / 35.1 86.4 / 37.7 74.2 / 39.7 60.9 / 41.9 380 178.2 196.0 / 30.3 134.6 / 32.6 106.1 / 34.9 87.5 / 37.5 76.4 / 39.5 420 188.9 245.3 / 28.2 162.2 / 30.5 127.6 / 32.8 108.7 / 35.1 99.7 / 37.4 460 208.7 374.8 / 26.3 194.6 / 28.6 136.8 / 30.9 133.2 / 33.2 171.5 / 35.5 500 188.7 444.7 / 24.5 260.3 / 26.8 197.6 / 29.2 187.2 / 31.5 222.3 / 33.8