Effects of Mn, Si and Cr Addition on the Spheroidization of Cementite in Hypereutectoid Fe-1mass%C Steel

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Effect of Mn, Si and Cr on spheroidization of cementite in Fe-1mass%C steel has been investigated over a range of austenitizing temperatures. In Fe-1C steel, a fully spheroidized structure is obtained but some large cementite particles are formed. The addition of 1.5 mass% Si or Cr accelerates spheroidization of cementite. An addition of Cr remarkably refine the cementite particle size, but the influence of Si addition on the cementite particle size is not remarkable. A fully spheroidized structure fails to develop in steel with the addition of 1.5% Mn under the condition used in present study. Some lamellar cementite still exist in the 1.5Mn steel. The pearlite-promoting effect of Mn is possibly attributed to the inhomogeneous distribution of cementite particles during the intercritical austenitization.

Info:

Periodical:

Materials Science Forum (Volumes 783-786)

Main Theme:

Edited by:

B. Mishra, M. Ionescu and T. Chandra

Pages:

1053-1057

DOI:

10.4028/www.scientific.net/MSF.783-786.1053

Citation:

G. H. Zhang et al., "Effects of Mn, Si and Cr Addition on the Spheroidization of Cementite in Hypereutectoid Fe-1mass%C Steel", Materials Science Forum, Vols. 783-786, pp. 1053-1057, 2014

Online since:

May 2014

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$35.00

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