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Use of Zirconium in Microalloyed Steels

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Abstract:

In this work, three Zr microalloyed steels with different levels of Zr were compared with plain C-Mn, Nb and Nb-Ti steels. Austenitic grain size was compared as a function of temperature for these steels. A qualitative assessment of the potential of Zr to delay austenite recrystallization, was also undertaken. Of course, the actual use of Zr depends on many considerations: cost, availability and behavior during steel refining among others but this preliminary assessment was encouraging. It showed that the addition of Zr was able to prevent grain growth at typical reheating temperatures, around 1200oC. Also, Zr was able to delay austenite recrystallization.

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Periodical:

Advanced Materials Research (Volumes 15-17)

Pages:

834-839

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.15-17.834

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Cite this paper

Online since:

February 2006

Authors:

A.R.B. Maia, C.R. Guinâncio, R.L. Germano, Paulo Rangel Rios, Ivani de S. Bott

Keywords:

Microalloyed, Microstructure, Steel, Zirconium

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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References

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