第二代单晶高温合金高周疲劳行为研究
李嘉荣(
),谢洪吉,韩梅,刘世忠
),谢洪吉,韩梅,刘世忠
High Cycle Fatigue Behavior of Second Generation Single Crystal Superalloy
LI Jiarong(),XIE Hongji,HAN Mei,LIU Shizhong
),XIE Hongji,HAN Mei,LIU Shizhong
图6. 760 ℃条件下DD6与DD5合金高周疲劳断口附近位错组态的TEM像
Fig.6. TEM images of dislocation configuration near fatigue fractures of DD6 and DD5 alloys at 760 ℃(a) DD6, σa=500 MPa, Nf =8.45×105 cyc (b) DD6, σa=700 MPa, Nf =5.74×104 cyc(c) DD5, σa=400 MPa, Nf=1.41×106 cyc (d) DD5, σa=600 MPa, Nf =8.96×104 cyc
