700 MPa级高塑低碳低合金钢的多相组织调控及性能
周文浩, 谢振家, 郭晖, 尚成嘉

REGULATION OF MULTI-PHASE MICROSTRUCTURE AND MECHANICAL PROPERTIES IN A 700 MPa GRADE LOW CARBON LOW ALLOY STEEL WITH GOOD DUCTILITY
ZHOU Wenhao, XIE Zhenjia, GUO Hui, SHANG Chengjia
表2 实验钢经780 ℃临界退火和660 ℃临界回火30 min后各相中的合金元素分配
Table 2 Distribution of alloying elements in different phases in experimental steel annealed at 780 ℃ and tempered at 660 ℃ for 30 min at equilibrium state
Temperature / ℃ Phase Volum fraction / % Mass fraction / % Ms / ℃
C Mn Ni Cu
780 Austenite 45.0 0.2 3.1 1.4 1.4 333
Ferrite 55.0 - 1.2 0.7 0.6 -
660 Austenite 37.9 0.5 6.1 2.6 1.7 120
Ferrite 61.5 - 1.2 0.7 0.4 -
Cu 0.6 - 2.0 - 96.9 -