Competitive growth of stable and metastable Fe- C- X eutectics: Part II. mechanisms View Full Text


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Article Info

DATE

1988-08

AUTHORS

P. Magnin, W. Kurz

ABSTRACT

The competition between stable and metastable solidification in Fe-C-X alloys has been studied theo-retically, with particular regard to phase stability, nucleation, and growth processes. The effects of small additions of Si, P, Cr, Mn, Ti, Al, and S upon the transition velocities from grey to white and from white to grey in directional solidification are related to their influence on the eutectic tempera-tures, and nucleation and growth undercoolings. It is shown that the consequences of simultaneously adding Si and Cr upon the transition velocities can be deduced from the results of adding of Si and Cr separately only when the detailed effects of these elements upon phase stability, nucleation, and growth are known. The well-known carburizing effect of a high thermal gradient (superheat) has been shown to influence only the nucleation process. A three-phase austenite-graphite-cementite mi-crostructure resulting from the cooperative growth of a double stable/metastable eutectic has been observed for the first time. More... »

PAGES

1965-1971

References to SciGraph publications

  • 1988-08. Competitive growth of stable and metastable Fe- C- X eutectics: Part I. experiments in METALLURGICAL AND MATERIALS TRANSACTIONS A
  • Identifiers

    URI

    http://scigraph.springernature.com/pub.10.1007/bf02645200

    DOI

    http://dx.doi.org/10.1007/bf02645200

    DIMENSIONS

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