(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1 镍基高温合金的化学成分

Table 1 Chemical compositions of Ni-based superalloys

Sample C Cr Al Ti Nb W Mo Fe Ni (W+Mo)/Cr Nv A1 0.10 11.54 1.82 4.54 0.13 7.10 5.21 14.6 Bal. 1.07 2.34 A2 0.10 15.39 1.82 3.49 0.10 4.94 3.58 14.8 Bal. 0.55 2.32 A3 0.11 17.55 1.95 3.49 0.11 3.78 2.77 14.9 Bal. 0.37 2.41 A4 0.10 19.76 1.86 3.44 0.11 2.47 1.78 15.0 Bal. 0.22 2.44