The intergranularcracking in relieved-stress annealing samples is not obvious.
去应力退火试样上发现了平行轧面的深沟，且沿晶开裂不明显。
2
The partial pressure of iodine influents the thickness of corrosion products, and intergranularcracking is easier to be found when iodine partial pressure is high enough.
碘分压不仅影响腐蚀产物层的厚度，而且碘分压较高时沿晶开裂容易发生。
3
The results show that the main reason for the cracking was high temperature intergranular oxidation, with the fracture morphology being a typical intergranularcracking character.