Microstructure Evolution of a HSLA Offshore Steel with Cooling Rates
The high strength low alloy (HSLA) steels have been extensively used in offshore engineering. The appropriate microstructure of the HSLA structural steels was designedly controlled in steel making for offshore construction. The different microstructures of the steel were formed when shifted the cooling rate after final rolling. Experiment results shown that ferrite and pearlite were observed in the HSLA steel with a cooling rate less than 0.2°C/s. Bainite was formed when the cooling rate ranged from 1.0°C/s to 5.0°C/s and martensite was seen in the steel plate with a cooling rate more than 30°C/s. Generally the martensite is a prohibited product in the offshore structural steels.
B. Xu and H.Y. Li
Y. T. Chen et al., "Microstructure Evolution of a HSLA Offshore Steel with Cooling Rates", Advanced Materials Research, Vol. 583, pp. 306-309, 2012