A computational model for phase transformation-temperature-distortion coupling of AISI 5120 steel

Seok Jae Lee, Young Kook Lee

Research output: Contribution to journalArticle

Abstract

A coupled model for predicting phase transformation, temperature, and distortion of AISI 5120 steel occurring during heat treatment process has been developed. The phase transformation kinetic models were made using Johnson-Mehl-Avrami equation and the additivity rule based on theoretical thermodynamic model and experimental dilatometric data. Especially, the transformation strains measured during cooling were converted to the volume fraction of each phase for the kinetic models using a relation between transformation strain and atomic volume change. The heat transfer coefficients in quench media were calculated by inverse method of the heat transfer equation to the measured surface temperature history. To predict the temperature and distortion accurately, the thermal and mechanical data were used as a function of temperature and each phase based on the experimental data. The coupled model for phase transformation, temperature, and distortion has been implemented in the commercial finite element software ABAQUS as user subroutines. The calculated results by the coupled model were compared with the experimental ones.

Original languageEnglish
Pages (from-to)387-392
Number of pages6
JournalSolid State Phenomena
Volume118
DOIs
Publication statusPublished - 2006 Jan 1

Fingerprint

Steel
phase transformations
Phase transitions
steels
Temperature
temperature
subroutines
Kinetics
Subroutines
ABAQUS
kinetics
heat transfer coefficients
Heat transfer coefficients
surface temperature
Volume fraction
heat treatment
heat transfer
Heat treatment
histories
Thermodynamics

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Materials Science(all)
  • Condensed Matter Physics

Cite this

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abstract = "A coupled model for predicting phase transformation, temperature, and distortion of AISI 5120 steel occurring during heat treatment process has been developed. The phase transformation kinetic models were made using Johnson-Mehl-Avrami equation and the additivity rule based on theoretical thermodynamic model and experimental dilatometric data. Especially, the transformation strains measured during cooling were converted to the volume fraction of each phase for the kinetic models using a relation between transformation strain and atomic volume change. The heat transfer coefficients in quench media were calculated by inverse method of the heat transfer equation to the measured surface temperature history. To predict the temperature and distortion accurately, the thermal and mechanical data were used as a function of temperature and each phase based on the experimental data. The coupled model for phase transformation, temperature, and distortion has been implemented in the commercial finite element software ABAQUS as user subroutines. The calculated results by the coupled model were compared with the experimental ones.",
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A computational model for phase transformation-temperature-distortion coupling of AISI 5120 steel. / Lee, Seok Jae; Lee, Young Kook.

In: Solid State Phenomena, Vol. 118, 01.01.2006, p. 387-392.

Research output: Contribution to journalArticle

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