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Grain refinement and high precipitation hardening by combiningmicroalloying and accelerated cooling

Published online by Cambridge University Press:  14 June 2006

C. Mesplont
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Abstract

Critical parameters that affect both the ferrite grain size and the precipitation kinetics during hot rolling Nb-bearing steel were studied.Accelerated cooling was applied after the last pass of finishing rolling.In all cases the Nb(C,N) precipitation was strongly retarded, increasingthe precipitation hardening by the formation of fine precipitates.Moreover a non-negligible amount of Nb remained in solution. Nb(C,N)precipitation occurred during annealing cold rolled steel, causingsecondary hardening.

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Type
Research Article
Information
Metallurgical Research & Technology , Volume 103 , Issue 5: ÉnergieFour électriqueRevêtementUltra steels , May 2006 , pp. 238 - 246
Copyright
© La Revue de Métallurgie, 2006

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