马氏体-奥氏体组元特征分布对复相钢扩孔行为的影响

杨晓宇, 米振莉, 方幸, 刘航瑞, 牟望重

Achieving an Excellent Hole Expansion Behavior in Complex Phase Steels by Characteristic Distribution of Martensite-Austenite Constituents

YANG Xiaoyu, MI Zhenli, FANG Xing, LIU Hangrui, MU Wangzhong

图4 剪切影响区(SAZ)的硬化损伤特征

Fig.4 Hardening characteristics in shear affected zone (SAZ) (a) schematic of observation position and regions of SAZ (b) regions of SAZ and microhardness positions (c-f) microhardness curves of rollover zone (c), burnished zone (d), interface of burnished zone and fracture zone (e), and fracture zone (f), respectively (Microhardness positions are shown in Fig.4b) (g, h) schematics of damage hardening in SAZ of base steel (g) and advanced steel (h) (The number is the damage characteristic value)