钢材冷锻的破裂准则研究  

A New Criterion for Ductile Fracture of Steels in Cold Forging

作　　者：周士能[1] 陈志明[1] 李江平 

机构地区：[1]华中理工大学机械工程二系

出　　处：《华中理工大学学报》1990年第2期79-84,共6页Journal of Huazhong University of Science and Technology

摘　　要：为预测冷锻钢材的延性破裂和变形极限,本文针对静水应力对金属材料内部微孔表面能的影响、静水应力与应力偏量对内部微孔扩展的影响,提出了钢材冷锻时的理论破裂准则,并通过压缩实验和扭、压实验得到验证.In order to predict the forming limit and ductile fracture during cold forging of steels, a new criterion for ductile fracture of steels in cold forging is proposed with due consideration of the effect of hydrostatic pressure on both the surface energy and the expansion of internal void. It has been verified by compression and press-twist experiment.

关 键 词：钢材 冷锻 破裂 变形极限 

分 类 号：TG316.192[金属学及工艺—金属压力加工]