13th International Conference on Fracture June 16–21, 2013, Beijing, China -7- Figure 6. Corrosion fatigue fracture surface of Figure 7.Surface crack and fracture surface of HT50(TMCP) steel in sour crude oil HT50(TMCP) steel in sour crude oil (H2S400ppm) [Ebara et al.[37]]. (H2S400ppm) [Ebara et al.[37]]. round notched bar specimen round notched bar specimen 294,2MPa,2x104 cycles 196.1MPa, unfailed after 1.66x106 a) macroscopic fracture surface cycles b) crack initiation area a) surface crack c) 1.8mm from initiation b)macroscopic fracture surface c) 0.12 mm from surface
RkJQdWJsaXNoZXIy MjM0NDE=