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Improved thermodynamic formula for austenite/(austenite+cementite) phase boundary in low alloy steels

  • Suchul Yoon
  • , Seok Jae Lee*
  • *Corresponding author for this work
  • Jeonbuk National University

Research output: Contribution to journalJournal articlepeer-review

Abstract

Ortho-equilibrium (OE) and para-equilibrium (PE) thermodynamic calculations were carried out to predict the phase boundary for hypo- and hyper-eutectoid low alloy steels. The temperature variation of the partitioning effect of substitutional alloying elements on the actual phase boundary was considered. A new temperature formula was proposed as a function of chemical composition based on the thermodynamic calculations, which could predict the accurate phase boundary of various low alloy steels not only in the high temperature hyper-eutectoid region, but also in the low temperature hypo-eutectoid region. It is anticipated that the proposed formula can be useful for the calculation of various phase transformations of multi-component austenite with wide ranges of temperature and composition.

Original languageEnglish
Pages (from-to)1453-1455
Number of pages3
JournalISIJ International
Volume54
Issue number6
DOIs
StatePublished - 2014

Keywords

  • Acm temperature
  • Alloy partitioning
  • Low alloy steel
  • Thermodynamic model

Quacquarelli Symonds(QS) Subject Topics

  • Materials Science
  • Engineering - Mechanical

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