热冲压成形钢的强度与塑性及断裂应变
易红亮1,2(
),常智渊1,才贺龙1,杜鹏举1,杨达朋1
),常智渊1,才贺龙1,杜鹏举1,杨达朋1
Strength, Ductility and Fracture Strain ofPress-Hardening Steels
YI Hongliang1,2(),CHANG Zhiyuan1,CAI Helong1,DU Pengju1,YANG Dapeng1
),CHANG Zhiyuan1,CAI Helong1,DU Pengju1,YANG Dapeng1
图2. VDA 238-100弯曲示意图与弯曲过程中的厚度方向应变的分布
Fig.2. Schematics of VDA 238-100 bending process (a) and strain state during bending (b) (α, t,ε represent bending angle, sheet thickness and principal strain in the circumferential direction, respectively)
