Numerical Prediction of Austenite Grain Growth Characteristic of AISI O1 Alloy Steel

Myrna Ariati Mochtar, Jaka Fajar Fatriansyah, Iping Suhariadi, Valen Befri Harefa

Research output: Contribution to journalArticlepeer-review

Abstract

The growth behavior of austenite grains and empirical equations to predict the grain size of austenite at different heating temperatures and holding times for AISI O1 steels were presented. From the study, it was found that the grain size of steel depended on the heating temperature and holding time. The roughening temperature was found to be 900 °C. The proposed mathematical prediction showed a good agreement with the experiment results where the value of time index m, activation energy Q, and experimental parameter A for AISI O1 alloy steel were 0.68521, 211,903.27229 J/mol, and 4.25866 × 108, respectively. The average absolute relative error value of the calculation was found to be 7.41% indicating a good accuracy and reliability of our modeling.

Original languageEnglish
JournalJournal of Materials Engineering and Performance
DOIs
Publication statusAccepted/In press - 2022

Keywords

  • austenite
  • austenitization holding time
  • austenitization temperature
  • grain growth modeling
  • grain size

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