Nb/Ti比对铸造镍基高温合金长期时效组织演化的影响*
孙文, 秦学智, 郭永安, 郭建亭, 楼琅洪, 周兰章

EFFECTS OF Nb/Ti RATIOS ON THE MICROSTRUCTURAL EVOLUTIONS OF CAST Ni-BASED SUPERALLOYS DURING LONG-TERM THERMAL EXPOSURE
SUN Wen, QIN Xuezhi, GUO Yongan, GUO Jianting, LOU Langhong, ZHOU Lanzhang
表2 热处理后初生MC的化学成分
Table 2 Compositions of primary MC after heat treatment
Sample Nb Ti Mo W Cr Ni Nb/Ti Nb+Ti (Nb+Ti)/(W+Mo)
A0 41.0 29.3 9.0 16.0 1.6 3.1 1.4 70.3 2.8
A2 23.9 37.6 11.1 23.5 1.3 2.6 0.6 61.5 1.8
A4 4.7 43.0 13.6 31.1 2.6 5.0 0.1 47.7 1.1