Effect of Intercritical Annealing Temperature on Martensite Amount for Dual-Phases Steel

Abstract:

The theoretical prediction of intercritical annealing temperature for DP steels was conducted by thermodynamic calculation, which agreed to the experimental results. When annealed at 800°Caccording to the calculated temperature of 807°C by setting ratios of α:γ in 70:30, the amount of martensite was 13~18% and the mechanical properties achieved DP590 grade. There was at least 10% to 12% austenite transformed to new ferrite and martensite between intercritical annealing and overaging procedure.

• Periodical: Advanced Materials Research (Volume 548)
• Pages: 301-304
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.548.301
• Online since: July 2012
• Authors: Fang Fang, Yun Yang Yin, Hui Wang, Cheng Jiang Lin
• Keywords: Dual Phase Steel, Intercritical Annealing Temperature, Thermo-Calc

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