多边形铁素体<strong>/</strong>针状铁素体双相管线钢的应变硬化行为

多边形铁素体/针状铁素体双相管线钢的应变硬化行为

荀雨, 严伟, 史显波, 章传国, 单以银, 杨柯, 任毅

Strain Hardening Behavior of Polygonal Ferrite and Acicular Ferrite Dual-phase Pipeline Steel

XUN Yu, YAN Wei, SHI Xianbo, ZHANG Chuanguo, SHAN Yiyin, YANG Ke, REN Yi

表3 实验用钢的修正C-J分析中各阶段应变硬化能力和转折应变(ε_t)

Table 3 Strain hardening capability of each stages and transition strain (ε_t) of experimental steel in modified C-J analysis

Experimental Steel	Stage Ⅰ		Stage Ⅱ		Stage Ⅲ		Engineering strain/%
	1-m	1/m	1-m	1/m	1-m	1/m	Transition strain		UEL
	1-m	1/m	1-m	1/m	1-m	1/m	ε_t1 (Stage Ⅰ~Ⅱ)	ε_t2 (Stage Ⅱ~Ⅲ)	UEL
1#	/	/	-9.21	0.098	-21.4	0.045	/	1.5	5.2
2#	-1.29	0.437	-5.50	0.154	-11.7	0.079	1.7	11.6	16.1
3#	-1.75	0.364	-5.01	0.166	-11.9	0.078	3.7	13.6	18.3
4#	-2.28	0.305	-5.36	0.157	-9.57	0.095	4.8	14.6	19.5