高尉钧, 王潑旭, 张润奇, et al. Experimental Research on Control Rolling and Cooling of Ultrahigh-Strength Ferrite-Bainite Dual-phase Steel[J]. Special Steel, 2019, 40(6): 18-22.
高尉钧, 王潑旭, 张润奇, et al. Experimental Research on Control Rolling and Cooling of Ultrahigh-Strength Ferrite-Bainite Dual-phase Steel[J]. Special Steel, 2019, 40(6): 18-22.DOI:
The control rolling and cooling test of ferrite-bainite dual phase steel (/% :0. 22C
0. 47Si
2. 50Mn
0.05Al
0.02Nb
0.41 Cu) with finishing rolling at 800 ~860 ℃. is carried out by a
Φ450
mm mill in laboratory. The results show that a microstructure containing ferrite
bainite
martensite and retained austenite in test steel can be obtained ;the ferrite grains are refined with decreasing finish rolling temperature and accelerating cooling;the amount of retained austenite is 11.4% when the steel finished rolling at 800 °C and subsequent laminar cooled to 560 ℃. and then air cooled to room temperature to contribute a lot to comprehensive properties of strength and toughness