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Phase Stability of Carbides and Nitrides in Steel

Published online by Cambridge University Press:  26 February 2011

Marcel Sluiter*
Affiliation:
M.H.F.Sluiter@tudelft.nl, TU Delft, MSE-3ME, Mekelweg 2,, Delft, 2628 CD, Netherlands, +31 15 278 4922
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Abstract

Carbides, nitrides, and carbonitrides have great influence on the properties of steel but are relatively little studied at a fundamental level: experimentally because of small dimensions of the precipitates and other difficulties, theoretically because of complex structures and poorly defined compositions. Modern density functional calculations reveal significant trends that can be partially summarized in terms of atomic size, carbon affinity, and hybridization de-magnetization concepts. Phase stability and order-disorder phenomena in widely occurring Cr-based M23C6 carbides and Mo-based M6C carbides are used to illustrate predictions relevant to low alloyed steel.

Type
Research Article
Copyright
Copyright © Materials Research Society 2007

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References

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