Effect of the Continuous Annealing Process on Microstructure and Mechanical Properties of DP590 Steel

Abstract:

The microstructure and mechanical properties of the continuous annealing DP590 steel produced by a cold rolled plant were studied by utilizing a Gleeble thermal simulator tested machine. The results show that, increasing annealing temperature can not effectively improve the martensite content in the steel and annealing temperature be set at 780 °C and 800 °C is rational. Martensite decomposition at high overaging temperature will decrease tensile strength of the samples. As the overaging temperature sets at 250 °C ~ 300 °C, the samples could achieve tensile strength more than 600 MPa, which meet the requirements of DP590.

• Periodical: Applied Mechanics and Materials (Volumes 395-396)
• Pages: 313-317
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.395-396.313
• Online since: September 2013
• Authors: Hong Bin Wang, Rui Xing, Yi Yao Yu, Ji Guang Li, Ji Hong Yang, Ping Long
• Keywords: Annealing Temperature, Martensite, Over-Aging Temperature

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