Ti/Al比对GH984G合金长期时效过程中γ′沉淀相粗化行为及拉伸性能的影响

谭梅林, 王常帅, 郭永安, 郭建亭, 周兰章

INFLUENCE OF Ti/Al RATIOS ON γ′ COARSENING BEHAVIOR AND TENSILE PROPERTIES OF GH984G ALLOY DURING LONG-TERM THERMAL EXPOSURE

TAN Meilin, WANG Changshuai, GUO Yongan, GUO Jianting, ZHOU Lanzhang

表3 长期时效对GH984G合金拉伸性能的影响

Table 3 Effects of long-term aging on tensile properties of GH984G alloy

Alloy state Rm / MPa Rp0.2 / MPa d / % y / % Ti/Al=1.00 Ti/Al=1.42 Ti/Al=1.00 Ti/Al=1.42 Ti/Al=1.00 Ti/Al=1.42 Ti/Al=1.00 Ti/Al=1.42 Standard heat treatment 733 745 477 480 42 44 45.0 42.5 700 ℃ / 10480 h 745 745 545 535 40 42 43.0 45.0 750 ℃ / 10480 h 640 660 385 400 40 42 43.5 48.5 800 ℃ / 10480 h 560 565 265 250 64 61 60.0 59.0