高 γ' 相含量粉末及变形高温合金组织和力学性能的异同性

王洪瑛, 姚志浩, 李大禹, 郭婧, 姚凯俊, 董建新

Similarities and Differences of Microstructure and Mechanical Properties Between High γ' Content Powder and Wrought Superalloys

WANG Hongying, YAO Zhihao, LI Dayu, GUO Jing, YAO Kaijun, DONG Jianxin

表1 FGH4720Li和GH4720Li合金中大、小角度晶界和孪晶界的数量分数 (%)

Table 1 Number fraction of high and low angle grain boundaries and twin boundaries in FGH4720Li and GH4720Li alloys

Alloy Grain boundary misorientation Twin boundary 2°-10° 10°-180° Σ3 Σ9 Σ27a Σ27b FGH-1 16.2 83.8 27.5 0.9 0.2 0.4 GH-1 9.0 91.0 28.3 1.5 0.1 0.6 FGH-2 15.6 84.4 25.2 0.8 0.2 0.2 GH-2 9.9 90.1 24.3 1.2 0.2 0.3 FGH-3 16.8 83.2 24.6 0.8 0.1 0.3 GH-3 8.0 92.0 22.9 0.8 0.1 0.4