ISSN 2594-5297
50th Rolling Seminar – Processes, Rolled and Coated Products — Vol. 50, Num. 50 (2013)
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Abstract
There some concerns about the use of Nb microalloyed steels in the normalizing rolling of plate steels, as this thermomechanical treatment ends under a temperature range where Nb(CN) precipitation can promote partial recrystallization of austenite. The aim of this work was to verify the effectiveness of Nb in retarding austenite recrystallization and to determine conditions under which Nb microalloyed steels can be processed through normalizing rolling fulfilling, as much as possible, the metallurgical recommendations proposed to this thermomechanical treatment, mainly the full austenite recrystallization between consecutive rolling passes.
There some concerns about the use of Nb microalloyed steels in the normalizing rolling of plate steels, as this thermomechanical treatment ends under a temperature range where Nb(CN) precipitation can promote partial recrystallization of austenite. The aim of this work was to verify the effectiveness of Nb in retarding austenite recrystallization and to determine conditions under which Nb microalloyed steels can be processed through normalizing rolling fulfilling, as much as possible, the metallurgical recommendations proposed to this thermomechanical treatment, mainly the full austenite recrystallization between consecutive rolling passes.
Keywords
Normalizing rolling; Nb microalloyed steel; Austenite recrystallization; Precipitation.
Normalizing rolling; Nb microalloyed steel; Austenite recrystallization; Precipitation.
How to cite
Silva, Marcos Roberto Soares da; Gorni, Antonio Augusto.
METALLURGICAL ANALYSIS OF THE NORMALIZING ROLLING OF NIOBIUM MICROALLOYED STEELS,
p. 1124-1132.
In: 50th Rolling Seminar – Processes, Rolled and Coated Products,
São Paulo,
2013.
ISSN: 2594-5297, DOI 10.5151/2594-5297-24140