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Title
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The effect of Nb on texture evolutions of the ultrafine-grained dual-phase steels fabricated by cold rolling and intercritical annealing
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Type
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JournalPaper
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Keywords
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Ultrafine-grained dual phase steel, Thermomechanical processing, Texture, EBSD, Nb
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Abstract
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Dual phase (DP) steels with different amounts of Nb were produced by utilizing cold rolling and intercritical annealing of a ferrite-martensite duplex starting structure. The effects of Nb contents (0.00, 0.06, 0.12 and 0.18 wt%) on microstructure and texture evolutions were studied. Addition of Nb promoted formation of ultra-fine grained structures with the ferrite grain size of about ∼1 μm and uniformly-dispersed martensite particles. The results showed increasing the fraction of the high angle grain boundaries and formation of {111} fiber components in the microstructures with increasing Nb content. In addition, the texture power was decreased with the addition of Nb, resulting in random texture components.
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Researchers
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Yousef Mazaheri Roudbali (Fifth Researcher), Abbas Najafizadeh (Fourth Researcher), Ehsan Ghassemali (Third Researcher), Ahmad Kermanpur (Second Researcher), Ali Ghatei Kalashami (First Researcher)
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