Research on Austenite Static Recrystallization Kinetics of Ultra-High Strength Dual Phase Steel

Zhuang Li; Di Wu; Wei Lv; Zhen Zheng; Shao Pu Kang

doi:10.4028/www.scientific.net/AMR.631-632.310

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 631-632Research on Austenite Static Recrystallization...

Research on Austenite Static Recrystallization Kinetics of Ultra-High Strength Dual Phase Steel

Abstract:

In this paper, double deformation test was conducted in a MMS-300 thermomechanical simulator. Austenite static recrystallization kinetics of ultra-high strength dual phase steel was investigated. The results have shown that the softening fractions increase with holding time as a whole. Under deformation temperatures of 950°C, 1000°C and 1050°C, the softening fractions increase with the increase of the deformation temperature. And the softening curve appears relatively flat under deformation temperatures of 950°C. The austenite no-recrystallization temperature (Tnr) of ultra-high strength dual phase steel was between 900°C and 950°C. Double deformation test conditions which promoted Nb(CN) precipitation resulted in a decrease of a austenite recrystallization. Strain induced precipitation of Nb (CN) was the main reason why the softening curve appeared a plateau.

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Periodical:

Advanced Materials Research (Volumes 631-632)

Pages:

310-313

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.631-632.310

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Online since:

January 2013

Authors:

Zhuang Li, Di Wu, Wei Lv, Zhen Zheng, Shao Pu Kang

Keywords:

Dual Phase Steel, Recrystallization, Softening Fractions

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References

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