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Implications of Accelerated Solidification Rates Seen in Belt Casting on Precipitation in Nb Bearing Steels

Journal Article


Abstract


  • High temperature confocal microscopy (using cooling rates of 1 and

    20 Cs-1) has been used in conjunction with segregation modeling (for

    cooling rates of 0.1–100 Cs-1) to understand the implications that high

    cooling rates, representative of that seen for belt casting, has on compositional

    in homogeneity and precipitation in high strength low alloy steels. Due

    to the increased level of segregation (and reduced back diffusion) precipitates

    are predicted, and shown, to form in the interdendritic solute rich regions at

    temperatures higher than would be expected under equilibrium conditions at

    the higher cooling rate. This results in a larger volume fraction of precipitates

    in samples held at 1000 C after being cooled at 20 Cs-1 compared to those

    cooled at 1 Cs-1.

UOW Authors


  •   Slater, Carl (external author)
  •   Kostryzhev, Andrii
  •   Marenych, Olexandra (external author)
  •   Davis, Claire L. (external author)

Publication Date


  • 2018

Citation


  • Slater, C., Kostryzhev, A., Marenych, O. & Davis, C. (2018). Implications of Accelerated Solidification Rates Seen in Belt Casting on Precipitation in Nb Bearing Steels. Steel Research International, 89 (3), 1700358-1-1700358-7.

Scopus Eid


  • 2-s2.0-85033668888

Start Page


  • 1700358-1

End Page


  • 1700358-7

Volume


  • 89

Issue


  • 3

Place Of Publication


  • Germany

Abstract


  • High temperature confocal microscopy (using cooling rates of 1 and

    20 Cs-1) has been used in conjunction with segregation modeling (for

    cooling rates of 0.1–100 Cs-1) to understand the implications that high

    cooling rates, representative of that seen for belt casting, has on compositional

    in homogeneity and precipitation in high strength low alloy steels. Due

    to the increased level of segregation (and reduced back diffusion) precipitates

    are predicted, and shown, to form in the interdendritic solute rich regions at

    temperatures higher than would be expected under equilibrium conditions at

    the higher cooling rate. This results in a larger volume fraction of precipitates

    in samples held at 1000 C after being cooled at 20 Cs-1 compared to those

    cooled at 1 Cs-1.

UOW Authors


  •   Slater, Carl (external author)
  •   Kostryzhev, Andrii
  •   Marenych, Olexandra (external author)
  •   Davis, Claire L. (external author)

Publication Date


  • 2018

Citation


  • Slater, C., Kostryzhev, A., Marenych, O. & Davis, C. (2018). Implications of Accelerated Solidification Rates Seen in Belt Casting on Precipitation in Nb Bearing Steels. Steel Research International, 89 (3), 1700358-1-1700358-7.

Scopus Eid


  • 2-s2.0-85033668888

Start Page


  • 1700358-1

End Page


  • 1700358-7

Volume


  • 89

Issue


  • 3

Place Of Publication


  • Germany