In other word, thearnount of snake-like dimple on fracture surface is determined by the amount ofpearlite in the sintered steels. In the case of higher carbon content(e. g. 0. 76% ),cleavage fracture is observed.

• 韧性断裂所占的份额取决于烧桔钢中的碳含量、冷却速度及退火温度，即烧结钢中的珠光体数量决定统形韧窝的数量，在高碳时（如0.；76%25C），还出现解理断裂。