750℃时效对GH4742合金疲劳裂纹扩展行为的影响
张星硕1,2,王磊1,2(
),刘杨1,2,王斯堃1,2
),刘杨1,2,王斯堃1,2
Effect of Aging Treatment at 750℃ on Fatigue Crack Propagation Behavior of GH4742 Superalloy
ZHANG Xingshuo1,2,WANG Lei1,2(),LIU Yang1,2,WANG Sikun1,2
),LIU Yang1,2,WANG Sikun1,2
图4. GH4742合金标准热处理后MC型碳化物的SEM形貌
Fig.4. SEM morphology of MC carbide of GH4742 superalloy
