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7. 750℃时效GH4742合金疲劳裂纹扩展路径的SEM形貌
Fig.7. Fatigue crack growth morphology of GH4742 superalloy aged at 750℃ (a), (b) SHTed in Paris regions and in rapid propagation regions; (c), (d) aged at 750℃ for 1000 h in Paris regions and in rapid propagation regions
