Austenite Grain Size of Thin Slab and Its Influence on Direct Hot Strip Rolling of Nb Microalloyed Steel
2005 ◽
Vol 500-501
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pp. 295-302
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Keyword(s):
In the production with thin slab casting a serious problem of insufficient grain refinement and microstructural inhomogeneity has been found. In this paper attention has been paid to the austenite grain size changes in thin slab of a high strength Nb microalloyed steel under as-cast conditions and after first rolling pass. For comparison, the conventional thick slab was also investigated. It was found that although as-cast thin slab shows a smaller average austenite grain size than that of as cast thick slab; the latter after reheating shows a much finer average austenite grain size. The first rolling pass at high temperature and with heavy reduction causes rapid recrystallization that contributes to austenite grain refinement.
Keyword(s):
2007 ◽
Vol 550
◽
pp. 429-434
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2007 ◽
Vol 447
(1-2)
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pp. 11-18
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2007 ◽
Vol 459
(1-2)
◽
pp. 40-46
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2014 ◽
Vol 42
(1)
◽
pp. 41-48
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Keyword(s):
Effect of austenite grain size on isothermal bainite transformation in low carbon microalloyed steel
2011 ◽
Vol 27
(11)
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pp. 1657-1663
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Keyword(s):
2003 ◽
Vol 43
(12)
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pp. 2015-2022
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Keyword(s):