The fracture stress of DP microstructure increased with the increase of displacement speed, and the microcrackdensity increased with the decrease of displacement speed.
双态组织的断裂应力随加载速度的上升而增加,微裂纹面密度随加载速度的增加明显下降;
2
In general, a higher pre existing microcrackdensity or a lower loading stress rate results in a longer nucleation stage, and therefore, increases the predictability of catastrophic failure event.