紧密排布结构大模组铸造DD5单晶高温合金的凝固组织

刘家宝, 高雪峰, 张皓宇, 王亮, 王延辉, 乐献刚, 孟杰, 李金国, 周亦胄

Microstructure of DD5 Single Crystal High-temperature Alloy Prepared via Rapid Solidification Process by Using a Large Module with Dense Array of Seed Crystals

LIU Jiabao, GAO Xuefeng, ZHANG Haoyu, WANG Liang, WANG Yanhui, YUE Xiangang, MENG Jie, LI Jinguo, ZHOU Yizhou

表1 DD5合金的名义成分

Table 1 Nominal composition of DD5 alloy (mass fraction, %)

Cr Co Mo W Al Ta Re Hf Y Ni 7.0 7.5 1.5 5.0 6.2 6.5 3.0 0.15 0.01 Bal.