(W+Mo)/Cr比对铸造镍基高温合金时效组织和持久性能的影响

孙文, 秦学智, 郭建亭, 楼琅洪, 周兰章

EFFECTS OF (W+Mo)/Cr RATIO ON MICROSTRUC-TURAL EVOLUTIONS AND MECHANICAL PROPER-TIES OF CAST Ni-BASED SUPERALLOYS DURING LONG-TERM THERMAL EXPOSURE

SUN Wen, QIN Xuezhi, GUO Jianting, LOU Langhong, ZHOU Lanzhang

表2 MC的成分及热稳定性参数

Table 2 Compositions and thermal stability parameters of MC in alloys

Sample Ti Nb Mo W Cr Ni Nb/Ti (Nb+Ti)/(W+Mo) A1 47.45 4.39 15.50 28.60 1.53 2.50 0.09 1.18 A2 43.00 4.70 13.60 31.10 2.60 5.00 0.10 1.06 A3 50.10 5.00 12.95 27.70 1.60 2.69 0.10 1.36 A4 56.20 6.55 10.10 24.26 1.30 1.65 0.12 1.83