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The Effect of Alloying Elements on the Bainiite Transformation in Ductile Iron

Published online by Cambridge University Press:  21 February 2011

Sven-Eric Stenfors
Sven-Eric Stenfors*
Affiliation:
Department of Metallurgy Royal Institute of Technology S-100 44 Stockholm, Sweden
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Abstract

The formation of retained austenite in nodular cast iron by austenitizing and heat treating at 450 or 350 C has been studied by X-ray measurements and metallographic examination. It has thus been related to the detailed mechanism of the bainite transformation.

The effects of the addition of a few tenths of a percent of Mn, Cr and Mo were examined and the effect of higher contents was estimated from literature data. Already small additions increase the maximum amount of retained austenite but larger additions are needed in order to increase the time for complete transformation substantially.

A small addition of Sn which has a strong effect on the transformation to pearlite had no effect on the transformation to bainite.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 34: Symposium – Physical Metallurgy of Cast Iron , 1984 , 423
Copyright
Copyright © Materials Research Society 1985

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References

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