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

Strength, Ductility and Fracture Strain ofPress-Hardening Steels

YI Hongliang^1,²(

),CHANG Zhiyuan¹,CAI Helong¹,DU Pengju¹,YANG Dapeng¹

图8. 淬火-闪配分(Q&FP)热冲压钢的TEM像

Fig.8. Bright-field (a, c) and dark-field (b, d) TEM images of the press-hardening steels QFP1500^[21] (a, b) and QFP1800 (c, d) designed by Q&FP concept (γ presents retained austenite and the insets in Figs.8b and d show the SAED patterns of γ)