镍基粉末高温合金中微量元素Hf的作用*
张义文1,2(
),胡本芙3
),胡本芙3
FUNCTION OF MICROELEMENT Hf IN POWDER METALLURGY NICKEL-BASED SUPERALLOYS
Yiwen ZHANG1,2(),Benfu HU3
),Benfu HU3
图12. 标准热处理态含0.30%Hf的FGH97合金650 ℃疲劳裂纹扩展速率试样断口起始区及扩展区形貌
Fig.12. Fracture morphologies of fatigue crack growth at initiation region (a) and propagation region (b) for standard heat treated FGH97 alloy at 650 ℃ with 0.30%Hf
