Abstract
By using transmission electron microscopy and electron back-scattered diffraction, the effect of annealing temperature on the precipitation behavior and texture evolution in a warm-rolled interstitial-free high strength steel was studied. The results indicated that fine FeTiP could precipitate at 650 °C, and the number of those precipitates increased greatly with the increasing annealing temperature until 800 °C. Furthermore, the nucleation of FeTiP was influenced by the precipitation of TiC and (Ti, Nb) C. The near absence of FeTiP and a large volume fraction of TiC and (Ti, Nb) C in matrix are envisaged to be primarily responsible for the sharp γ-fiber texture. As the boundary pinning effect caused by FeTiP is weak and there are less interstitial C atoms in matrix. Thus, annealing at 800 °C leads to the highest intensity of γ-fiber texture.
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Acknowledgments
This work was financially supported by the National Basic Research Program of China (No. 2011CB606306-2). The authors would like to gratefully acknowledge the support from them. R.D.K. Misra gratefully acknowledges support from Center for Structural and Functional Materials, University of Louisiana at Lafayette, USA.
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Zhang, J., Cao, Y., Jiang, G. et al. Effect of Annealing Temperature on the Precipitation Behavior and Texture Evolution in a Warm-Rolled P-Containing Interstitial-Free High Strength Steel. Acta Metall. Sin. (Engl. Lett.) 27, 395–400 (2014). https://doi.org/10.1007/s40195-014-0072-0
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DOI: https://doi.org/10.1007/s40195-014-0072-0