应变速率对X80管线钢铁素体/贝氏体应变分配行为的影响

王楠, 陈永楠, 赵秦阳, 武刚, 张震, 罗金恒

Effect of Strain Rate on the Strain Partitioning Behavior of Ferrite/Bainite in X80 Pipeline Steel

WANG Nan, CHEN Yongnan, ZHAO Qinyang, WU Gang, ZHANG Zhen, LUO Jinheng

图11 不同应变速率下X80钢的应变硬化行为

Fig.11 Strain hardening behaviors of X80 steel under different strain rates (a) true stress-strain curves (b) modified C-J model (εI-II is the strain at the transition point from stage I to stage II, and εII-III is the strain at the transition point from stage II to stage III)