Precipitation kinetics of NbC in ferrite of a Nb microalloyed steel

Y. H. Choi, H. C. Shin, C. S. Choi, Y. K. Lee

Research output: Contribution to journalConference article

5 Citations (Scopus)

Abstract

The precipitation kinetics of NbC in ferrite matrix of a Nb microalloyed steel was investigated experimentally and numerically. The change in electrical resistivity due to NbC precipitation was measured at different constant temperatures as a function of holding time and was converted to the precipitation kinetics of NbC using a lever rule. The precipitation kinetics was compared with a classical nucleation and growth model and with the hardness. There is a good match among the calculated and measured precipitation kinetics of NbC and the hardness. The numerical and experimental results have been used to construct a precipitation-temperature-time diagram of NbC in ferrite matrix of the Nb microalloyed steel.

Original languageEnglish
Pages (from-to)563-570
Number of pages8
JournalJournal De Physique. IV : JP
Volume120
DOIs
Publication statusPublished - 2004 Dec 1
EventICTPMCS: 2nd International Conference on Thermal Process Modelling and Computer Simulation - Nancy, France
Duration: 2003 Mar 312003 Apr 2

Fingerprint

Steel
Ferrite
ferrites
steels
Kinetics
kinetics
Hardness
hardness
levers
Nucleation
matrices
Temperature
diagrams
nucleation
electrical resistivity
temperature

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Choi, Y. H. ; Shin, H. C. ; Choi, C. S. ; Lee, Y. K. / Precipitation kinetics of NbC in ferrite of a Nb microalloyed steel. In: Journal De Physique. IV : JP. 2004 ; Vol. 120. pp. 563-570.
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abstract = "The precipitation kinetics of NbC in ferrite matrix of a Nb microalloyed steel was investigated experimentally and numerically. The change in electrical resistivity due to NbC precipitation was measured at different constant temperatures as a function of holding time and was converted to the precipitation kinetics of NbC using a lever rule. The precipitation kinetics was compared with a classical nucleation and growth model and with the hardness. There is a good match among the calculated and measured precipitation kinetics of NbC and the hardness. The numerical and experimental results have been used to construct a precipitation-temperature-time diagram of NbC in ferrite matrix of the Nb microalloyed steel.",
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Precipitation kinetics of NbC in ferrite of a Nb microalloyed steel. / Choi, Y. H.; Shin, H. C.; Choi, C. S.; Lee, Y. K.

In: Journal De Physique. IV : JP, Vol. 120, 01.12.2004, p. 563-570.

Research output: Contribution to journalConference article

TY - JOUR

T1 - Precipitation kinetics of NbC in ferrite of a Nb microalloyed steel

AU - Choi, Y. H.

AU - Shin, H. C.

AU - Choi, C. S.

AU - Lee, Y. K.

PY - 2004/12/1

Y1 - 2004/12/1

N2 - The precipitation kinetics of NbC in ferrite matrix of a Nb microalloyed steel was investigated experimentally and numerically. The change in electrical resistivity due to NbC precipitation was measured at different constant temperatures as a function of holding time and was converted to the precipitation kinetics of NbC using a lever rule. The precipitation kinetics was compared with a classical nucleation and growth model and with the hardness. There is a good match among the calculated and measured precipitation kinetics of NbC and the hardness. The numerical and experimental results have been used to construct a precipitation-temperature-time diagram of NbC in ferrite matrix of the Nb microalloyed steel.

AB - The precipitation kinetics of NbC in ferrite matrix of a Nb microalloyed steel was investigated experimentally and numerically. The change in electrical resistivity due to NbC precipitation was measured at different constant temperatures as a function of holding time and was converted to the precipitation kinetics of NbC using a lever rule. The precipitation kinetics was compared with a classical nucleation and growth model and with the hardness. There is a good match among the calculated and measured precipitation kinetics of NbC and the hardness. The numerical and experimental results have been used to construct a precipitation-temperature-time diagram of NbC in ferrite matrix of the Nb microalloyed steel.

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