两种“W替Re”型低成本第二代镍基单晶高温合金的高温持久变形机制

周章瑞, 吕培森, 赵国旗, 张剑, 赵云松, 刘丽荣

Stress Rupture Deformation Mechanism of Two "Replacement of Re by W" Type Low-cost Second-generation Nickel Based Single Crystal Superalloys at Elevated Temperatures

ZHOU Zhangrui, LV Peisen, ZHAO Guoqi, ZHANG Jian, ZHAO Yunsong, LIU Lirong

表1 两种单晶高温合金名义成分(质量分数, %)

Table 1 Nominal composition of two single crystal superalloys (%, mass fraction)

Alloys Cr W Re Co Al+Ti+Ta Mo Hf C Ni 8.0W+1.5Re 5.0 8.0 1.5 9.0 14.6 0.6 0.2 100×10-6 Bal. 8.5W+1.0Re 5.0 8.5 1.0 9.0 14.6 0.6 0.2 100×10-6 Bal.