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| Microstructure and Texture of Nb+Ti–IF Steels After Ultra–short Annealing |
| HOU Ziyong, XU Yunbo, WU Di |
| The State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110819 |
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Cite this article:
HOU Ziyong XU Yunbo WU Di. Microstructure and Texture of Nb+Ti–IF Steels After Ultra–short Annealing. Chin J Mater Res, 2012, 26(1): 13-20.
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Abstract The effect of ultra–short annealing process on microstructural and textural evolutions associated with an Nb+Ti–IF steel sheet with cold reduction of 94.2% was investigated. The results show that the well–recrystallized samples have been obtained in several seconds during the ultra short annealing cycle with higher heating rate up to 300℃/s. In the fully recrystallized condition, the finer grain size and the higher growth velocity, 10.12 μm and ∼23 μm/s, respectively, can be found in an ultra–short annealing cycle than that in the conventional annealing with heating rate of 20℃/s, 12.98 μm and ∼3 μm/s, respectively, while also amounts of dislocations in recrystal grain have been observed. The characteristic more homogeneous {111} deep drawing fiber of cold rolled IF steels and other fiber texture
nearby α skeleton absent, which is potential for high strength steel with deep drawing, were observed in an annealing treatment as short as 0.41 s.
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Received: 17 October 2011
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| Fund: Supported by National Natural Science Foundation of China Nos.50734001 and 50971039, and National Key Basic Research and Development Program of China No.2011CB606306. |
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