GH2909低膨胀高温合金热处理中的组织演变行为

李钊, 江河, 王涛, 付书红, 张勇

Microstructure Evolution of GH2909 Low Expansion Superalloy During Heat Treatment

LI Zhao, JIANG He, WANG Tao, FU Shuhong, ZHANG Yong

表1 实验用GH2909合金热处理工艺

Table 1 Heat treatment processes of GH2909 in present work

No. Heat treatment T0 As forged T1 980oC, 15 min, air cooling (AC) T2 980oC, 15 min, AC + 980oC, 1 h, AC T3 980oC, 15 min, AC + 980oC, 1 h, water cooling (WQ) T4 980oC, 15 min, AC + 980oC, 1 h, AC + 720oC, 8 h, furnace cooling (0.9oC·min-1) to 620oC, 8 h, AC