第二代单晶高温合金高周疲劳行为研究

李嘉荣,谢洪吉,韩梅,刘世忠

High Cycle Fatigue Behavior of Second Generation Single Crystal Superalloy

Jiarong LI,Hongji XIE,Mei HAN,Shizhong LIU

表1 DD6和DD5合金的化学成分

Table 1 Nominal compositions of DD6 and DD5 alloys (mass fraction / %)

Alloy C Cr Co Mo W Ta Re Nb Al Hf B Ni DD6 0.006 4.30 9.00 2.00 8.00 7.50 2.00 0.5 5.6 0.10 - Bal. DD5 0.049 7.05 7.62 1.56 5.02 6.58 2.93 - 6.2 0.17 <0.01 Bal.