Application of a new model to the interphase precipitation reaction in vanadium steels

P. Li, J. A. Todd

Research output: Contribution to journalArticlepeer-review

37 Scopus citations


A new model has been applied to the precipitation of vanadium carbide (VC) particles in sheets at austenite/ferrite interphase boundaries during the isothermal transformation of Fe-C-V steels. Linear relationships between the intersheet spacings, the VC particle sizes, and the square root of the vana-dium diffusivity in ferrite have been identified. The model establishes predictive correlations be-tween the interphase precipitate sheet widths, intersheet spacings, and boundary migration speeds as a function of isothermal transformation temperature, and shows that the time associated with the in-terphase precipitate repeat period is a constant for each alloy over the temperature ranges studied. From a single measurement of interphase boundary velocity in a volume where the intersheet spac-ing is known, it is possible to predict the intersheet spacing and width as a function of temperature.

Original languageEnglish (US)
Pages (from-to)2139-2151
Number of pages13
JournalMetallurgical Transactions A
Issue number9
StatePublished - Sep 1988

All Science Journal Classification (ASJC) codes

  • Engineering(all)


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