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<p>Austenitization of a Ni-containing medium carbon steel with ferrite–pearlite microstructure, during continuous heating (5&#xa0;°C/s) is studied using dilatometry. A comprehensive methodology is proposed for accurate quantitative prediction of the phase fractions as a function of temperature from dilation data. The predictions were validated using interrupted quenching experiments and microstructural characterization. The dilatometry results suggest the presence of partition-less/massive transformation of pro-eutectoid ferrite to austenite in the steel studied which has been verified by microstructural characterization.</p> Graphical Abstract <p></p>

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Analysis of Austenitization and Partition-Less Transformation of Ferrite to Austenite During Continuous heating Of a Fe–C–Si–Ni Steel Using Dilatometry

  • 期刊论文

  • 发表日期：

    2025年7月19日

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  • P. Ponguru Senthil,
  • R. Chandana,
  • K. Gopinath,
  • Partha Ghosal,
  • Debalay Chakrabarti,
  • Shiv Brat Singh

摘要

Austenitization of a Ni-containing medium carbon steel with ferrite–pearlite microstructure, during continuous heating (5 °C/s) is studied using dilatometry. A comprehensive methodology is proposed for accurate quantitative prediction of the phase fractions as a function of temperature from dilation data. The predictions were validated using interrupted quenching experiments and microstructural characterization. The dilatometry results suggest the presence of partition-less/massive transformation of pro-eutectoid ferrite to austenite in the steel studied which has been verified by microstructural characterization.

Graphical Abstract