热处理工艺对高成型性<strong>0.1%C-3%Mn</strong>中锰钢组织和性能的影响

热处理工艺对高成型性0.1%C-3%Mn中锰钢组织和性能的影响

周永浪, 王官涛, 王立军, 刘春明

Effect of Heat Treatment Process on Microstructure and Properties of a 0.1%C-3% Mn Medium Manganese Steel of High-formability

ZHOU Yonglang, WANG Guantao, WANG Lijun, LIU Chunming

表2 实验钢二步法ART处理组织中的残留奥氏体含量和含碳量及其力学性能

Table 2 Retained austenite content, carbon content of retained austenite and mechanical properties of experimental steel treated by two-step ART treatment

Heat treatment	$V_{A r}$ /%	$C_{γ}$ /%	R_p0.2 /MPa	R_m /MPa	A_t /%	A_u /%	A_kv /J	PSE /GPa·%
740℃×0.5 h+650℃×1.0 h	6.7	0.67	503	668	34.0	17.0	>250	22.71
740℃×0.5 h+660℃×1.0 h	12.5	0.71	492	681	40.7	24.0	>250	27.72
740℃×0.5 h+670℃×1.0 h	14.1	0.70	476	686	40.7	25.0	229	27.92
740℃×0.5 h+680℃×1.0 h	14.4	0.72	487	788	37.3	22.0	163	29.39
740℃×0.5 h→670℃×1.0 h	1.7	0.61	531	1000	20.5	10%	28	20.53